Lg l16c Lucky fastboot? - Android Q&A, Help & Troubleshooting

Carrier is Tracfone, running android 4.4.2, and is rooted with kingoroot.
I can get to factory reset menu by holding vol down + power, releasing power only and holding again at LG logo, but can't seem to find download mode/fastboot. I have searched all over the place and I personally don't like posting on forums, but this phone is at the edge of unusable because I tried to replace home app with a third party, and now it crash loops the setup wizard making usb debugging unable to be accessed from the settings menu. But I have the home app's apk and can install it, if I can get adb working somehow, like through fastboot, which bring me to the actual problem: There isn't a fastboot, or I haven't found a way to activate it yet for this phone. I tried all kinds of different combinations and searched all over the internet looking for help. Nothing. but If download mode is accessible, is there a way to install apps via download mode? I don't know that much about download mode, just heard about it.
If this doesn't make sense/topics are wandering, sorry, I have been tired from thinking hard and working on another project that is actually doing better at murdering my brain then school.

Don't think so
I bought this phone last January. For a cheap phone it performs rather well. I rooted with Kingroot v4.5 and used the mrwolf script to replace Kinguser with SuperSu. Of course I had to modify the script for that version of Kingroot, the LGL16C's files that were affected by Kingroot, and the newer version of SuperSu I installed. This phone taught me how to manually replace Kinguser with SuperSu by only using RootExplorer. Pretty neat trick, have been able to do it with every cheap phone I've tried.
I had my LG Lucky rocking. Had Xposed installed, Luhkee Pasher worked great, Apps2SD partitioned my sdcard and moved apps to ext_sdcard and was running a swap partition for extra RAM. This little phone would format and partition sd cards that my more expensive devices would not.
It was a great disappointment when I discovered that the phone had no recovery. I was equally disappointed when I discovered that I couldn't use fastboot with it. If it has download mode, I have yet to discover that as well. I've searched the web high and low, numerous times at different intervals these past eight or nine months hoping that someone would post a factory firmware file, thread on how to install a recovery, how to install fastboot, etc...
I loaned my LG Lucky out to someone who had no means of accessing the internet a few weeks ago and they somehow soft bricked it. It turns on to the LG logo and stops. Without a recovery it's boned because adb "error: no devices/emulators found".
I have a backup.zip from TitaniumBackup but can't flash it. I pulled the firmware from the device when it was operational but have no way to push it back. So if you need any file or app from /system I have them.
I'm going to buy another one or two if I can find one. I think a person could use gparted to partition the hard disc for a recovery and a download mode. Right now it's over my head but I love to learn.
Also, this morning, I downloaded the tools and files from http://forum.xda-developers.com/android/general/unbrick-lg-model-download-recovery-t3060184 If I can get something out of this phone by using this guide, I'll use the ROM Kitchen I have downloaded to make a ROM from the files I pulled previously with ADB.
I'll be sure to post back here with the results from using the guide.

Related

[Q] Cannot find USB Driver

I have a BLU Quattro 4.5 android device and when I try to connect via USB Debug mode and run ADB Device it will not find my phone. I have searched high and low in order to locate the driver with no luck. The generic USB driver from google won't even work. I have even run emulator from the phone and when I type: pm set-install-location 2, it comes back with Killed and then back to command prompt. When I type: pm get-install-location it comes back as 0[auto]. My phones main memory is 1 gb and 1.5 internal usb memory. With all of the main system apps updated on the main drive, the phone cannot handle ANY other apps, even when I put apps on the usb memory it is very sluggish. I need help in trying to install and run all of the apps from the external sd card and just have the system apps running on the main disk. I would also like any help in finding the driver needed to access the phone in ADB.
BLU Quattro 4.5"
4 GB Internal Memory( Broken up to 1 GB Main, 1.5 GB USB Storage, and not sure where the other .5 GB went.)
1 GB Ram
NVIDIA Tegra 1.5 GHZ Quad Core
16 GB Class 10 Micro SD Card
Android 4.0.4 ICS
Unlocked Running Straight Talk/T-Mobile Sim
GOT IT!!!!!!!!!!!!!!!!!!
plymouthrock99 said:
I have a BLU Quattro 4.5 android device and when I try to connect via USB Debug mode and run ADB Device it will not find my phone. I have searched high and low in order to locate the driver with no luck. The generic USB driver from google won't even work. I have even run emulator from the phone and when I type: pm set-install-location 2, it comes back with Killed and then back to command prompt. When I type: pm get-install-location it comes back as 0[auto]. My phones main memory is 1 gb and 1.5 internal usb memory. With all of the main system apps updated on the main drive, the phone cannot handle ANY other apps, even when I put apps on the usb memory it is very sluggish. I need help in trying to install and run all of the apps from the external sd card and just have the system apps running on the main disk. I would also like any help in finding the driver needed to access the phone in ADB.
BLU Quattro 4.5"
4 GB Internal Memory( Broken up to 1 GB Main, 1.5 GB USB Storage, and not sure where the other .5 GB went.)
1 GB Ram
NVIDIA Tegra 1.5 GHZ Quad Core
16 GB Class 10 Micro SD Card
Android 4.0.4 ICS
Unlocked Running Straight Talk/T-Mobile Sim
Click to expand...
Click to collapse
found generic driver from PDANET that finally allowed me to access my phone from ADB and I was able to make the necessary changes. Yippeee! pdanet.co
plymouthrock99 said:
found generic driver from PDANET that finally allowed me to access my phone from ADB and I was able to make the necessary changes. Yippeee!
Click to expand...
Click to collapse
Good news! I just bought the same phone, and I'm waiting on delivery as we speak. From the reviews I've read so far this phone delivers the most bang for the buck. I just hope that we'll be able too root it soon. How do you like it so far?
londonflu said:
Good news! I just bought the same phone, and I'm waiting on delivery as we speak. From the reviews I've read so far this phone delivers the most bang for the buck. I just hope that we'll be able too root it soon. How do you like it so far?
Click to expand...
Click to collapse
I have one as well and was able to root it with the latest bin4ry tool! Hopefully Blu will enhance their customer support as they gain more popularity and release some source code or dev tools for the phone. Or at least, since it's rooted, the device can eventually gain support from any devs.
Kah,
Can you post root instructions for us, please?
Sorry, I would've posted before but I wasn't sure if that would move the thread off track. It was very easy actually:
Make sure adb recognizes the device (mine said 123ABCDEF... or something like that for some reason. It doesn't matter apparently).
- Also I'm using windows 7 and after allowing the few default drivers to install, it worked instantly. ( I believe. I do remember messing around with some other software, but I think that was in hopes of finding a root tool. If you have any issues, I can post the names of other software I tried. The OP's method could possibly work too)
I downloaded Root_with_Restore_by_Bin4ry_v23.
- there's a new version out now, but I would expect it to work as well
I choose the normal mode and followed the directions.
- If I remember correctly, it gives you the option to install superuser or super su. I chose superuser, and it worked. But after using it for a bit, it gave me lots of issues with root privileges, so I installed super su from the market and I haven't had an issue since.
Any Information posted in this thread is Great!
I don't mind taking this off track of what the original thread. I like it that it is progressing the way it is, helps me out with other questions and anyone else that starts off with my problem probably wants additional information on what else could be done with these phones.
kah1593 said:
Sorry, I would've posted before but I wasn't sure if that would move the thread off track. It was very easy actually:
Make sure adb recognizes the device (mine said 123ABCDEF... or something like that for some reason. It doesn't matter apparently).
- Also I'm using windows 7 and after allowing the few default drivers to install, it worked instantly. ( I believe. I do remember messing around with some other software, but I think that was in hopes of finding a root tool. If you have any issues, I can post the names of other software I tried. The OP's method could possibly work too)
I downloaded Root_with_Restore_by_Bin4ry_v23.
- there's a new version out now, but I would expect it to work as well
I choose the normal mode and followed the directions.
- If I remember correctly, it gives you the option to install superuser or super su. I chose superuser, and it worked. But after using it for a bit, it gave me lots of issues with root privileges, so I installed super su from the market and I haven't had an issue since.
Click to expand...
Click to collapse
Average
I am still having issues with ram and touchscreen when main storage location gets full. It becomes very unresponsive and the touchscreen becomes very sluggish. Some things I cannot move to the external sd card and all the installed apps still get installed on primary drive even after changing default install location. I need to figure out how to install and run everything, including the android os.
londonflu said:
Good news! I just bought the same phone, and I'm waiting on delivery as we speak. From the reviews I've read so far this phone delivers the most bang for the buck. I just hope that we'll be able too root it soon. How do you like it so far?
Click to expand...
Click to collapse
plymouthrock99 said:
I am still having issues with ram and touchscreen when main storage location gets full. It becomes very unresponsive and the touchscreen becomes very sluggish. Some things I cannot move to the external sd card and all the installed apps still get installed on primary drive even after changing default install location. I need to figure out how to install and run everything, including the android os.
Click to expand...
Click to collapse
Try using Mounts2SD..
I doubt I'll get much help on this, but I'll give it a shot. I just got my Quattro 4.5 today, and tried to root it with Bin4ry. It never did the first reboot, it just turned the phone off. After a few minutes I turned it back on still connected to USB, Bin4ry tried to finish, but gave a permission denied error on the superuser apk. Now my phone is in continuous boot loop, it gets to the lock screen, but says Go Laucher and system UI has stopped, then reboots. Is this thing bricked? Holding volume down and power just goes to a modem download screen, but no USB connection or anything. :crying:
j21blackjack said:
I doubt I'll get much help on this, but I'll give it a shot. I just got my Quattro 4.5 today, and tried to root it with Bin4ry. It never did the first reboot, it just turned the phone off. After a few minutes I turned it back on still connected to USB, Bin4ry tried to finish, but gave a permission denied error on the superuser apk. Now my phone is in continuous boot loop, it gets to the lock screen, but says Go Laucher and system UI has stopped, then reboots. Is this thing bricked? Holding volume down and power just goes to a modem download screen, but no USB connection or anything. :crying:
Click to expand...
Click to collapse
I'm sorry to hear than man. Which version of Bin4ry did you use? You could try quickly using adb to boot into recovery mode while the phone is still in the process of booting. You'd have to keep sending
Code:
adb reboot recovery
until adb recognizes the device. Hopefully, it'll restart into recovery before it crashes. Not sure if it'll work, but it's an idea.
kah1593 said:
I'm sorry to hear than man. Which version of Bin4ry did you use? You could try quickly using adb to boot into recovery mode while the phone is still in the process of booting. You'd have to keep sending
Code:
adb reboot recovery
until adb recognizes the device. Hopefully, it'll restart into recovery before it crashes. Not sure if it'll work, but it's an idea.
Click to expand...
Click to collapse
Everything is fixed! I figured out how to get into recovery. I was able to do a factory reset from there and everything came back, actually maybe better. Then I found an old version of Bin4ry, v15, and tried again. This time it worked perfectly. This phone is pretty awesome, I just wish there was developer support for it.
j21blackjack said:
Everything is fixed! I figured out how to get into recovery. I was able to do a factory reset from there and everything came back, actually maybe better. Then I found an old version of Bin4ry, v15, and tried again. This time it worked perfectly. This phone is pretty awesome, I just wish there was developer support for it.
Click to expand...
Click to collapse
Great! How'd you manage to get into recovery mode despite the boot loop? In case anyone else runs into the same issue.
kah1593 said:
Great! How'd you manage to get into recovery mode despite the boot loop? In case anyone else runs into the same issue.
Click to expand...
Click to collapse
Hold volume up and power until it turns on. As soon as the screen changes to green, I let go of the power button and keep holding the volume up button until it's in recovery mode. It seems the power button release has to be timed right or else it just sits on the green screen, or powers off again. It takes a couple of tries for me. I probably did 10 factory resets last night before finally getting it rooted, lol. The built in recovery has an option to flash from external storage, kind of makes me wonder how easy this phone would be to get CWM working. Of course, the real problem is getting developers to write the custom ROMs for it. The only thing this $230 phone is missing from its $600 cousins is 4G LTE, but on Tmobile it doesn't even matter right now. It's still blazing fast even on stock with no overclock, I can't imagine how much more awesome it would be with a custom rom.
kah1593 said:
Sorry, I would've posted before but I wasn't sure if that would move the thread off track. It was very easy actually:
Make sure adb recognizes the device (mine said 123ABCDEF... or something like that for some reason. It doesn't matter apparently).
- Also I'm using windows 7 and after allowing the few default drivers to install, it worked instantly. ( I believe. I do remember messing around with some other software, but I think that was in hopes of finding a root tool. If you have any issues, I can post the names of other software I tried. The OP's method could possibly work too)
I downloaded Root_with_Restore_by_Bin4ry_v23.
- there's a new version out now, but I would expect it to work as well
I choose the normal mode and followed the directions.
- If I remember correctly, it gives you the option to install superuser or super su. I chose superuser, and it worked. But after using it for a bit, it gave me lots of issues with root privileges, so I installed super su from the market and I haven't had an issue since.
Click to expand...
Click to collapse
Can anyone post a link of where I'll find the proper drivers? It just shows BLU with an exclamation in my Device Manager. The PDANET trick did not work as it won't detect the device. - and if I can get this working, I'll post an actual tutorial for it.
If anyone could post an update.zip of the original rom that would be fantastic. - and clockwork 6 will run on our devices with some work. but right now, mine is a brick, it still has recovery but the stock rom is effed.
I'm in the same situation. I deleted my contacts.apk in hopes of replacing it with a stock version, now it's stuck in a boot loop, and factory reset doesn't help.
Alright guys, I hit the jackpot. I have CM 10.1 working on my Quattro 4.5. It all began when I read somewhere on the xda forums that the Quattro 4.5 and k-touch v9 are essential the same phone. I said before, my phone was bricked so I figured I do some more research and see what I could do. Turns out that person as right. I found a website ( http://www.needrom.com/phone-roms/k-touch/k-touch-v9/ ) that has 3 roms for the v9, CM 10.1, MIUI 3.4.5, and CM 10, and instructions to install them. I decided to take a leap of faith and follow the directions given for CM 10.1. The installation directions for custom recovery CWM 6.0.1.1 worked perfectly - only problem is after you've installed the recovery, the menus are in Chinese.
Once again, My phone was bricked and essentially completely erased. If your phone isn't bricked, it should be fine as long as you do a factory reset before. I would suggest doing this before installing the CWM recovery because I have no clue how to do the reset using the Chinese menu.
I downloaded the CM 10.1 rom from the website above and gapps for 4.2.2 as well (you can find this with google). If you're using one of the other roms, obviously make sure you're using the proper gapps version.
ADB works while in recovery so use this to push the zips to the phone. I say this because I've discovered the sd card directory changes depending if your phone is bricked or not (i.e. /emmc vs /sdcard).
Flash the rom zip, then gapps - select the 2nd option in the main menu then in the following menu, the 4th option. This should lead you to the directory containing your zip files. Choose the appropriate one, and let the CWM work its magic. ( also from messing around I can also tell you the first option in the main menu is to reboot)
Once you've reboot, everything should work perfectly - WIFI, bluetooth, brightness, camera, video recording, audio, microphone, not a single problem except the volume being much louder than before. It's amazing. I have straighttalk's $30 plan, so I'm still stuck with a dumbphone until I bump up to the unlimited everything at the end of the cycle, so I can't test the phone radio, but I would expect it to work considering everything else does as well. Let me know if I left something out. I would test the other roms, but I'm so happy and content with my phone working again, I don't want to go through the effort just yet.
I found a way to create an English recovery that works from the Chinese version. Just replace the recovery.img provided with this one. Here's the link: https://www.dropbox.com/s/5y6r9gvspvouhbo/recovery.img I don't think this should cause any issues because it hasn't for me, but remember you are using this at your own risk. Though if an issue does arise, I'll try my best to help.
Install with English Recovery?
Did you install with the English recovery, because I am stuck at CM10.1 boot screen installing with the English recovery.

[Q&A] [REF] LG Optimus FUEL lgl34c

I picked up this device from walmart for $29.99 with the intentions of learning some new development stuff.I
thought for 30 bucks there's gonna be a lot of these little "duallies" running around why not a cheap candidate?
So far as i can tell there is little info found about this device so I'm looking to collect what little is known about
it in one place in hopes to get a jump on it. First things first, I am responsible for my own actions as you are yours.
If your not sure ask or simply dont do, some of this stuff can brick your device!
*ROOT*
These are the instructions I followed to root.
http://www.androidarea51.com/all-things-root/working-root-for-lg-optimus-fuel-woot/
dont forget to install supersu
https://play.google.com/store/apps/details?id=eu.chainfire.supersu&hl=en
and busybox afterwards!
https://play.google.com/store/apps/details?id=stericson.busybox&hl=en
*RECOVERY*
Downloaded "TWRP Manager" from play store.
twrp settings, I enabled the sd card patch.
Install twrp\device name :l34c\version i instaled: openrecovery-twrp-2.8.4.0-l34c.img
click install... wait... things will pop up..... things will go away... wait some more...
finally a dialogue that states sucess.
***ISSUES HAVE BEEN REPORTED OF LOSING RECOVERY OR THE ABILITY TO ENTER IT AFTER
A WIPE AS WELL AS PROBLEMS BACKING UP AND OR RESTORING.
I have "injected" twrp manager into the system using titanium backup (link2sd will work also). This seems to
prevent any issues I have read about previously mentioned. Also I have successfully preformed backups as
well as restores, both before and after wiping. I have not figured out how to enter twrp recovery upon boot
yet, so be careful of what you do!
*SAFE TO REMOVE APPS*
yet to come
I use "titanium backup" from the play store, still trimming.I can get it down to about 230MB
available "free" ram at the moment but not consistently.
Ok had an issue with a task manager improperly reporting free available ram... true availability was
around 150mb free. There are apps that have to be replaced when removed, for example a launcher
for a launcher but some do not. Again I'm still trimming and experimenting, right now my system rom
around 244mb free. Most every thing I have done has been on the phone its self without the need of a P.C.
*STOCK BACK UP*
Yet to come
Any candidates for a true stock rom? Ive hacked the crap out of this one so far without the need of a back up... i know tisk tisk tisk!
I'm going for a debloated deodexed stock rom, hopefully!
*DRIVERS*
The only ones I could find that actually work. The Verizon drivers mentioned for the g2, not surprising since it runs on vz towers!
http://forum.xda-developers.com/showthread.php?t=2432476
*TETHERING*
using the android wifi tether 3.3beta2
https://code.google.com/p/android-wifi-tether/
all settings untouched except
device profile
lg optimus 3d
device access does work as well as encryption
*XPOSED*
Does work, im using 2.6.1.
*DPI*
The app I'm using for safe keeping to test dpi settings
https://play.google.com/store/apps/details?id=com.oumugai.densityadjuster
200 not working
170 works
160 native
150 works
140 works
130 works
120 works (looks good)
110 works
Temporarily went back to native dpi for debloating purposes. Will revisit later.
After messing with DPI settings I'm having a"contacts has stopped working " when tapping on the phone app.
DPI set to 120 when I noticed. All dpi switches affect lg home launcher
so you will need another launcher.
ok so far thats what i got. whats the nexts step to a stock AOSP rom?
questions and/or constructive comments wecome
reserved
I've got a few of these that are bootlooping. They show the LG logo, and then TracPhone Wireless splash screen infinitely in a loop.
Two questions.
1 - Is there any way to recover them? I'm hoping for some sort of a dev tool that I could flash a stock image or something (like Odin is for Samsung phones)
2- When these phones started bootlooping, I installed TWRP on the other Fuels that I have, thinking that I didn't want it to happen to them. My understanding of the TWRP that's installed from TWRP manager doesn't flash a modified boot image, so you can't enter TWRP from a powered off (or in my case, bootlooping) phone. Is that correct? I flashed a custom boot image from elsewhere that allows me to tap vol up at the LG logo to boot to TWRP. Any idea if this is enough of a safeguard to in the even of similar boot loops?
Any chance you know how to get it in diag mode? I need to connect it to DFS but can't without diag. Thanks for your help!
DrPhant0m said:
I've got a few of these that are bootlooping. They show the LG logo, and then TracPhone Wireless splash screen infinitely in a loop.
Two questions.
1 - Is there any way to recover them? I'm hoping for some sort of a dev tool that I could flash a stock image or something (like Odin is for Samsung phones)
2- When these phones started bootlooping, I installed TWRP on the other Fuels that I have, thinking that I didn't want it to happen to them. My understanding of the TWRP that's installed from TWRP manager doesn't flash a modified boot image, so you can't enter TWRP from a powered off (or in my case, bootlooping) phone. Is that correct? I flashed a custom boot image from elsewhere that allows me to tap vol up at the LG logo to boot to TWRP. Any idea if this is enough of a safeguard to in the even of similar boot loops?
Click to expand...
Click to collapse
My apologies for the delayed response. I have a lot going on in life.
As for recovering them, use the device you have closest to stock to make a backup. Do this before you attach your account or put any thing in to it after a "fresh wipe". To the best of my knowledge there isnt a tool like odin available, i could be wrong though. You can push a back up to the looping devices via adb. in order to do this you must have previously enabled usb debugging. The instructions are available on the web, i my self dont know how to do this. If you can establish an adb connection im sure you can command it to boot into twrp. For setup and testing use one of the devices that doesnt have a problem to establish adb. There is a little info on another thread i created about investigating the boot process the link is in my signature for the defy. Please be patient with me as i have two jobs and a single father, im not a hacker or developer. just a normal guy that is fascinated by my little robot willing to learn any thing. now that I know this thread is becoming active Ill monitor a little closer. Also if there is any thing i can help with ill be glad to do so. Im wanting to get a second fuel just for dev and learning purposes.
Recovery
Is there a way to access recovery on the lg fuel? I am stuck in a boot loop because I disabled the home screen service as well as other things that I did not pay attention to. I do not have a custom recovery installed.
I've never been able to boot to recovery by way of button press. Seems like there's a way to get into boot loader mode though. Just can't remember off the top of my head, I'm at work now and don't have the fuel with me. I'll see what I can figure out in a few hours when I get home. In the mean time you can try button combos upon boot to include the home button. If we can get ADB talking to it there's a chance I can send you copies of the files needed. Give me more details of what you have done just before the boot looping.
Sent from my ALCATEL A564C using XDA Free mobile app
I bought the optimus fuel a few months ago and i've been using it primarily for a music player/run keeping devices during my jogs. I turned off mobile data and i've noticed that i still see signal bars on the top notification area - does this mean that the radios are still on?
I was wondering if there was some way to completely disable the cellular radios so that i could conserve battery life inbetween days where I don't run?
Thanks!
This is a pretty cool app....
https://play.google.com/store/apps/details?id=com.latedroid.juicedefender
Airplane mode and then turn WiFi back on does the trick. "Radios off" = ton more juice
Has anyone found out anything else for this little phone? I have the LG Optimus Fuel. Had it for a few months now. I rooted it as soon as I got it and uninstalled a few system apps like the LG keyboard, the default SMS app and Chrome along with 2 or 3 other Google apps. It's still running fine.
I installed TWRP recovery and a custom boot image so I could boot into recovery by pressing the up volume button. Works great. I made a full system backup and saved it to my external SD card and saved it to my Debian laptop.
Right now I'm just looking for a custom ROM for this little phone but can't find one. I'd love to get Cyanogenmod on this phone but there are none. I'd port it myself but I'm not able to at the moment.
reemobeens19 said:
...
*ROOT*
These are the instructions I followed to root.
http://www.androidarea51.com/all-things-root/working-root-for-lg-optimus-fuel-woot/
...
Click to expand...
Click to collapse
I'll expand on the above link because no one can view all of the info in that thread w/o registering for that site [PITA].
Load towelroot (www.towelroot.com). Upon running towelroot, press "welcome to towelroot v3" 3-times (quickly). Change 1337 0 1 0 4 0 to 1337 0 0 0 4 0 (change only the ONE to a ZERO), click "make it ra1n" and you're rooted. :good:
This was verified on an L34C running Android 4.4, Kernel 3.4.0+, build KRT16S.L34CV10c, Sw ver L34CV10c.
YMMV; IANAL
My apologies for the inconvenience, I was unaware for the need to register.
What I would like to do with the L34C is find a ROM with all the phone functionality removed, and few to no Google Apps (let me just add the ones I need). I am not planning on using it as a phone (I still have my old Casio flip-phone, need nothing else). My intention was to experiment with creating a PalmPDA "replacement", something small to carry around for addresses, notes/memos, calendar (you know, the stuff you used to do on PalmOS), and in addition figure out how to do record-level synchronization **locally** (as in I don't need to send my data to some dirt-floor shack in Bangalore just to have it sent back to a device 2 feet away from my computer). Additionally, would line to use it as a basic portable media player. Essentially, trying to re-create the Palm LifeDrive on Android.
To my knowledge there are no roms available for this device. Your best bet in my opinion is to remove apps 1 by 1 after rooting. Google each and find out what the risk and severity of removing them are. I have donated my device to a less fortunate fellow employee. So as of now I'm unable to help with testing. This method is what I do for all of my devices until I'm finally happy with its performance and functionality. Think of Android as the swiss army knife of the computer world, you can do just about any thing with it, you just gotta figure out what tools are useful to you and the ones you can do with out, then you gotta ask Google witch ones Android can function with out. I hope you find what your looking for in the little robot, its a really neat world inside there!
I hate to bump an old thread but, I also don't it necessary to start a new one, at least not yet anyway but, I too am looking for a way to flash stock ROM. I have LG34Cs to use as a reference..
Where is the link to exposed framework at for this phone?
All official twrp 3 images are broken on official site. Last good working was 2.8.7.0.
Here is working twrp 3.1.1 if anyone interested:
Code:
mega.nz/#!I0lhAYAY!fRbQtQjYFI2kiJOD0FSEBPnBJm0JZxpiBaw52kyOfQE
majexuj said:
All official twrp 3 images are broken on official site. Last good working was 2.8.7.0.]
Click to expand...
Click to collapse
What does broken mean in detail? Do I risk to brick my L34C when I flash official twrp 3 images?
Mac23 said:
What does broken mean in detail? Do I risk to brick my L34C when I flash official twrp 3 images?
Click to expand...
Click to collapse
Broken as in doesn't boot into recovery. The phone will still boot into android, assuming you have a working system, and within android with root you can flash a working recovery image over a broken flash with the dd command on the twrp device info page (twrp.me/lg/lgoptimusfuel.html). So no real risk of brick, just possible inconvenience that might require a battery pull.
I built twrp 3.2.1 with same sources but I have not tested it since my battery seems to have completely died and the phone won't boot with usb power alone.
Here is link anyway in case anyone is interested:
Code:
mega.nz/#!ssExSY7S!_B3FcAmclzRwCKTX461Tl_QhpdwwK0tmvhL-6zkKLRw
---

[Q][HELP] Huawei g730-u251 insanity

Hello, XDA forumites!
I've been lurking and reading a lot of threads in here for years, using all your knowledge to fix various phones. Today though is the day I first post and it is for good reason. I'm a guy who loves challenges but this one is making me go insane. I've spend the last two days looking for ways to fix this phone but NOTHING works.
So, the deal is that this phone turns on fine. It boots, it gets to the lockscreen and... it restarts itself. Again and again and again until the battery is removed. To fix it, I've tried the following:
- recovering/updating it through the Huawei official "firmware" supplied by the site: you put the file they supply on an SD card, inside a folder named "dload" and then hold vol up and down along with the power button to make the phone install the contents of that file, named UPDATE.APP. Needless to say it doesn't work. A menu appears with the options reboot system now, apply update from sdcard, apply update from cache, wipe/data factory reset, wipe cache partition and calibrate touch screen. Trying to apply update from sdcard only lets me browse the SD looking for the file but doesn't actually see the file itself, it just shows the dload folder empty (I've tried with 4 different versions of the file compatible with phones from Central America which is where I am ATM). Also, the factory reset does nothing (although it shows it wipes data), everything's there when I start the phone up.
- flashing it with SD Flash Tool: apparently partially works with the last version 3 of the tool (although nothing changes) while version 5 of SDFT doesn't even see the phone (drivers are correctly installed, adb detects it, more on this later). A problem that arises is that I can't flash the SEC_RO package on it (don't know why) nor the PRELOADER (not that one is supposed to normally, but I feel like it would fix my problem in this case).
- cleaning it in safe mode: booting it in safe mode made me notice that it was an app pretending to be Whatsapp causing the restarts (or, perhaps, the one that loads immediately after? The phone has several malware apps). In safe mode those apps didn't load so the phone stayed on. So I cleaned everything, activated USB debugging (for later use in adb mode) and restarted only to find everything as it was before I did the cleanup. I tried rooting it in safemode, cleaning again, still reverts to full "normality" after the restart. Same results when using the phone's proprietary SW HiSuite.
- installing CWM's recovery img through adb+fastboot: I installed all the possible - necessary or unnecessary - drivers (Google's, phone's official ones, PDANet ones) and the phone is correctly detected by the PC (visible in Device Manager) and is visible through the adb devices command. But as soon as I adb reboot bootloader it to fastload the CWM image, the phone stops being seen correctly and doesn't show up in fastboot devices, only showing "NEW: SAFE OLD:RISK" on a black background on its screen.
So, to recap: the phone restarts because of a malware at startup, reverts any and all changes made to it in safemode, doesn't wipe from the recovery menu, apparently has a corrupted bootloader and is impervious to normal flashing SW... Anyone got any more ideas on how to deal with it? The only option left that comes to mind is to fix it directly by flashing the internal memory using JTAG/RIFF but I don't have the equipment (nor do I intend to buy it).
Bump, hoping for some help...
One more bump, still stuck
First, don't get happy: I have no answer to your problem. Sorry. But I have a similar one. I was running a very efficient, rooted, stock ROM G730-U251, until I decided to switch from 'Ninjamorph Free' to 'Pro'. I've been made a lot of changes with Free version for a long time without any issues at all. Then, one day, when making a small, useless change with 'Pro', something went wrong; phone just rebooted and refused to get past bootanimation. With no custom recovery on hand, only solution for this is to flash ROM. Though I had no problem finding the official, stock UPDATE.APP, which flashed smoothly from the SD card to be fair. Mess came when, once flashed, I decided to install OTA update available, which I overlooked since phone was new. Big, BIG mistake. It just came with more restrictions than ever, letting me root, yes, but this time with 'Kingroot' only (as stock, I had no problem rooting with Framaroot) but soon discovered I wasn't able to use 'Super-Sume', 'Adaway' and 'Link2SD', because some system parts now CAN'T be mounted rw, even using ES File Explorer. To avoid any complication, decided to reflash UPDATE.APP just as I did before. No way I can do it this time. Don't know exactly why, but assuming it's not possible to update with a previous version of the 'same' ROM. So now I'm looking for a flashable stock ROM in order to try SP flash tool. Phone is in working state right now (not as yours), but I just don't feel comfortable with it as it is right now, because those apps are always the main reason why I actually root every single of my devices and simply because I like to have my stuff as my own way as possible. You know, truth is there's not much of an advanced support for this phone, not even here at XDA and I think that's because this is a Latin America version. We owners of G730-U251 devices are pretty much on our own, to say the least. Whatever, if the whole deal gets more complicated than it is, there's a strong possibility for me to end up getting rid of this phone. Sad. Really. It's actually a good phone. Though it WAS better...

[SOLVED] HELP!!! Stuck in Fastboot Mode!!!

Hey guys I desperately need help here. I got this Kindle Fire 8.9" years ago, and got abandoned by my Dad because we live in SEA, can't do much with it, I cannot even get the free apps through Amazon Appstore. I can use fake US CC in this matter to get the free apps but Is that even legit? I have real CC and a legit Amazon account I bought real stuffs from Amazon too back then (books, some shirts and some gadgets) but that doesn't seem to help much.
Anyway sideloading apps from Google Play don't help much since the compatibility are horrible, and sideloading the Google Playstore itself just don't work. I've attempted to install all the Playstore requirements, some installed and some spit out "Parse error - There was a problem parsing the package".
I figure I needed to convert it to a full Android. So searching around I found about "fastboot" but I'm not familiar with it. I only got my hands dirty on Odin and SP Flash Tool.
I followed the instruction here :
http://forum.xda-developers.com/kin...t-install-twrp-android-fire-os-8-5-1-t3278286
Works very well, rooted with KingRoot (which I already have offline), installed FireFlash, flashed the bootloader and recovery (100% like the instruction told me), got into TWRP, did a full backup of the current ROM and reboot. I can get it to the Carousel just fine. I attempted to flash Gapps package for ICS (gapps-ics-20120429-signed.zip) from here (found from googling around, checked the content too) :
https://docs.google.com/file/d/0B6zwjGaKK0GVUll5Sm95LWpNaDg/edit
The installation went quite well, after running Play Store, it crashes constantly. Found another tutorial on installing Google Apps on another forum, which I lost the link, so I want to attempt another Google Play install before went to CyanogenMod.
I noticed something, after each reboot, I need to re-flash TWRP and reboot. When I attempt to reflash TWRP I notice that kfhd8freedom-boot-8.4.6.img didn't have any warning anymore.
The tablet was a gift from my brother in law to my Dad. It was never been reset ever since. In fact after I installed Google Play, it still got my brother in law login in it, even though it doesn't have the Google Play store. So I figure I need to do a factory reset and start 100% fresh, just to be sure.
And this is where it went wrong. After the factory reset the device rebooted into fastboot mode. I don't know why. I see the orange Kindle Fire logo, then the screen went red then "fast boot mode" appear on screen. At this point I cannot do anything to it. Followed every power button tutorials out there, like pressing the power for 20 seconds then release then hold it for 2 seconds, or power plus volume up/volume down, no luck.
I plugged it into my PC, it shows as "Android", and below it "Android ADB". So I tried to use ADB console for it, it didn't respond. However it responds to "fastboot" commands, tried some commands from here :
http://forum.xda-developers.com/showthread.php?t=1474566&page=2
These commands works :
fastboot -i 0x1949 oem idme bootmode 4000
fastboot -i 0x1949 reboot
But it went straight back to fastboot mode. My guess is that the culprit is kfhd8freedom-boot-8.4.6.img.
Looking around in the forum there're so many obsolete solutions, like Kindle Fire HD First Aide download link are dead and it was intended for Fire 7.
So the questions are :
How would you recommend me to fix this? Fastboot command definitely still working from PC to my Kindle, if that is any help for this case. I really have no clue on what to do next. I only experienced with Odin and SP Flash Tool. I have no experience with fastboot.
I don't have any stock rom at hands, neither can find any googling around. Can anyone provide me with one? Just in case anything bad happen again after I fix this.
Will this work for 8.9"? Since he posted it in Fire 7 forum : http://forum.xda-developers.com/showthread.php?t=1951254
Info on my devices :
Kindle Fire Jem 8.9"
Latest stock (8.5.1_user_5159720) was installed
Rooted with KingRoot before went brick
I have no fastboot cable, but the fastboot command mentioned earlier works on regular USB (OnePlus One's stock cable)
Gapps for ICS was installed within too
I got both Windows 10 and Windows XP PCs at my hand. XP seems to recognize it better as ADB something under "android" in device manager.
I also got Ubuntu 16.04 installation, if needed.
Please help.
Thank you in advance!
Managed to boot into Fire OS
I just use fastboot to flash both kfhd8-twrp-2.8.7.0-recovery.img and kfhd8-u-boot-prod-8.1.4.bin.
After a reboot I went into TWRP, it does a few stuffs then rebooted again automatically.
Blue logo came up, then the orange logo, but it took longer than usual, I was a bit panicking. Forgot that on each first boot Android would take longer than usual.
But then kindle fire up the first time setup *phew*
First I want to get Gapps working on this device. If that working well, I'll stick with stock + GAPPS and custom launcher.
Only after that I will try CM12 on it.
I'll update on this thread later on how it goes.
Did anyone still have the stock recovery.img and boot.img?
Also after completing the initial setup my navigation and status bar went missing
The navigation bar blinks for a second then went black. While the status bar which displays wifi icons and hide the settings are missing. I cannot swipe from above at all.
With the status bar and navigation bar missing I can't do anything in it.
I still have APKs (es file explorer, kingroot, fireflash, all the ROMS like Cyanogen & TWRP) within the internal storage, but I cannot reach them.
Using silk tried to open file:/// it said "Webpage not available". I did this previously to sideload ES file explorer.
I went into recovery (power + volume up) but it went into fastboot mode instead of TWRP. And this time in "fastboot mode" it doesn't recognize either adb or fastboot commands from my PC.
I cannot even factory reset it.
What to do next?
My god, overall my impression so far? The hardware itself are near Apple premium quality.
But it looks like Amazon tried to follow Apple's footstep in term of software too.
Also this got me thinking of not having an android without any dedicated navigation buttons.
Finally SOLVED.
I forgot I can download ES file explorer from Silk. But turn out my Amazon appstore account allowed me to download it instead. Probably because my dad and brother's credentials was wiped clean from it.
I went to find flashfire.apk in my internal storage. Install it, then the unknown source popup warning appeared. Luckily it got the settings button which lead me to that particular option. After I tick it, I need to shut my kindle down, reboot then went to install it again, because there's no navigation bar available.
After it installed, turn out Kingroot's root are still intact. Kingroot's root permission pop up appeared.
Reflashed TWRP and Freedom boot. Shut my Kindle down, volume up + power and I'm in TWRP!!!
I decide I'll just go full CM this time. So, continued this :
http://forum.xda-developers.com/kind...8-5-1-t3278286
Now I'm currently updating the default Google apps from Google Play within CM 12. A little laggy but most definitely far better than FireOS.
I'll be using this Kindle for a week, I'll report here and hopefully can contribute to CM's bug report.
So far : camera, bluetooth, WIFI, GPS works out of the box. Brightness settings don't work.
Just one question, does this fastboot cable thingy "standard"? I saw one seller in my local online shop but it's for Xiaomi. Can I use it for OnePlus One and Kindle?
Oh yeah I got TWRP backup of the stock kindle, but I would still need both stock boot and recovery image. If someone kindly enough to provide me I'll be very thankful.
Checking in
Root are enabled by default, just found out about this. It got build in, barebone SU management, on which you can allow an app to have root access or not, but didn't see any comprehensive root access management like those found in SuperSU.
So installed SuperSU, told SuperSU to just update through TWRP, update binary was a breeze, all done automatically.
Watching YouTube on it was quite convenient. The screen obviously have near-retina display. Much better than viewing it on my Note 10.1 2012 obviously.
No problem browsing on Chrome.
Installed couple of other root apps, transfered it from my cheap chinese phone (Mito) using Bluetooth. All works well.
Tried to play Shooty Skies on it but it stuck on the intro screen. However on my OPO Shooty Skies refuses to run too and stuck on the intro screen. I've unlocked all characters on it I'll just wait for an update then.
Did some theming, custom boot animations works, styles applied, icons and everything applied without any problem at all.
One complain, the sound are too low, even when maxed out. Perhaps because the Dolby isn't supported by this CM yet?
My dad complained that there're too many updates after the initial setup so I use System Cleaner 2 to merge the updates into the system. The app did wonderful job on my Mito :
https://play.google.com/store/apps/details?id=com.flaki.systemcleaner2
Merged all updates into the system. If I don't do this everytime I wipe the device, the device will keep asking for updates. At least on the Gapps. It stuck at the middle, so I restart the System Cleaner 2 and it continue to do its job.
Then when I install Link2SD, which often do better job and more comprehensive apk management, weird things started to happen. It's said SuperSU are not installed. That and also couple of Google Apps. When I run Link2SD, their size is 0.
I think it's most likely caused by System Cleaner 2, couple of apps got interrupted when I merge the updated apk into the system?
So I reboot, then after I got into trebuchet, all the supposedly installed apps are gone. I don't know why. Thus I wipe everything clean again, reflash CM12, and just go into unrooted mode, update the gapps, remove my account and let my dad login using his and do whatever he want with this kindle.
Another minor update.
Since I've downloaded ICS (CM11), I figure I might just try it anyway. Since on whatever softwares I use I prefer older, stable version than bleeding edge and feature-rich but unstable ones.
Take a note I'm not saying CM12 is unstable, no problem so far, only those I pointed out in the previous post. But mostly because CM11 was marked "stable" on CyanogenMod download site.
First impression? It's snappier than CM12, and much more familiar than Lollipop. (since most devices I own still using JellyBean, with the exception of my OPO which already running Marshmellow).
My dad should be familiar with it too. Quite happy with it. But unfortunately the gapps are too outdated. It throws me server errors, and I cannot reach anything within Google Play. I can browse google websites without problem, even google play itself inside the default browser, so it's not connection problem definitely.
Updating the google play manually doesn't fix this. So any solution for this? Perhaps updated gapps for CM11/4.0.4?
Edit : eh nevermind, the Gapps provided for CM12 works with CM11. And very stable too.
Edit : CM11 for Kindle 8.9 is JellyBean 4.4, not ICS.
I guess I'll stick to CM11 for awhile then.
One more question, what does the CM12 recovery do? Can I install it alongside CM11? Is it better than TWRP?
stubbe said:
One more question, what does the CM12 recovery do? Can I install it alongside CM11? Is it better than TWRP?
Click to expand...
Click to collapse
Appears you have gone your own way completely independent of general guidance/solutions offered in the HDX forums. Seemed to work too based on your copious self-reporting. Hope all remains well; you are on an island which isn't necessarily a bad thing.
Hey Davey. Thanks for the response.
Davey126 said:
Appears you have gone your own way completely independent of general guidance/solutions offered in the HDX forums. Seemed to work too based on your copious self-reporting. Hope all remains well; you are on an island which isn't necessarily a bad thing.
Click to expand...
Click to collapse
Lol. Xda isn't my first English speaking forum so I did a search or two before I ask anything. And I've been around here quite awhile just rarely post but xda is my primary resource on mobile customizations.
I do still have couple of unanswered questions tho :
1. I still need the stock FireOS and recovery. I'm very sure I've backed it up but I probably accidentally wiped them in the process because I saved them in the internal storage.
2. Are the fastboot cables universal? This thing is hard to look for in my local stores and I can only find Xiaomi's. Will this work for every fastboot devices out there? I just found out about fastboot from flashing this kindle and I also recently find out my OPO uses fastboot as well so kinda thought it would be handy to keep one around.
3. How does CM12's recovery compares to TWRP? And will it runs fine along CM11 rom? I can try it myself but having late sleeps for days just because I bricked my kindle again isn't cool lol. TWRP does its job well. If it ain't broken I don't want to fix it. But I just want to know why @Hashcode included it in Cm12. If it's worth it I'll go ahead and install it and probably give further reports about it.
So far my dad is enjoying his CM11 powered kindle. Not sure if he finds any new bugs or not but seems that he's not complaining.
Cheers and thanks in advance.
stubbe said:
Hey Davey. Thanks for the response.
Lol. Xda isn't my first English speaking forum so I did a search or two before I ask anything. And I've been around here quite awhile just rarely post but xda is my primary resource on mobile customizations.
I do still have couple of unanswered questions tho :
1. I still need the stock FireOS and recovery. I'm very sure I've backed it up but I probably accidentally wiped them in the process because I saved them in the internal storage.
2. Are the fastboot cables universal? This thing is hard to look for in my local stores and I can only find Xiaomi's. Will this work for every fastboot devices out there? I just found out about fastboot from flashing this kindle and I also recently find out my OPO uses fastboot as well so kinda thought it would be handy to keep one around.
3. How does CM12's recovery compares to TWRP? And will it runs fine along CM11 rom? I can try it myself but having late sleeps for days just because I bricked my kindle again isn't cool lol. TWRP does its job well. If it ain't broken I don't want to fix it. But I just want to know why @Hashcode included it in Cm12. If it's worth it I'll go ahead and install it and probably give further reports about it.
So far my dad is enjoying his CM11 powered kindle. Not sure if he finds any new bugs or not but seems that he's not complaining.
Cheers and thanks in advance.
Click to expand...
Click to collapse
As noted you have gone you own way so the standard responses don't necessarily apply. Quick notes:
- there are several ways of restoring stock FireOS on this device, none clean, all with ramifications. Unless you need FireOS I would stear clear
- no standard way of restoring stock recovery; obtaining a compatible recovery image will be a challenge. TWRP is far superior
- fastboot cables do not work with this device
- I have no knowledge of CM12's recovery. TWRP gets the job done and is universal.
Davey126 said:
As noted you have gone you own way so the standard responses don't necessarily apply. Quick notes:
- there are several ways of restoring stock FireOS on this device, none clean, all with ramifications. Unless you need FireOS I would stear clear
- no standard way of restoring stock recovery; obtaining a compatible recovery image will be a challenge. TWRP is far superior
Click to expand...
Click to collapse
Ah dang. Not that much of a problem though. I just like to keep stocks ROMs around just to be safe. I won't be returning this thing to Amazon anytime soon, and I guess judging by my brief experience with the FireOS it won't be much of a use for our locals using the stock ROM if I or my dad actually decide to sell it.
- fastboot cables do not work with this device
Click to expand...
Click to collapse
Mmm... okay.
- I have no knowledge of CM12's recovery. TWRP gets the job done and is universal.
Click to expand...
Click to collapse
Ok fair enough and besides I don't go to the recovery much other than doing a backup.
Thanks Davey.
stubbe said:
With the status bar and navigation bar missing I can't do anything in it.
I still have APKs (es file explorer, kingroot, fireflash, all the ROMS like Cyanogen & TWRP) within the internal storage, but I cannot reach them.
Using silk tried to open file:/// it said "Webpage not available". I did this previously to sideload ES file explorer.
I went into recovery (power + volume up) but it went into fastboot mode instead of TWRP. And this time in "fastboot mode" it doesn't recognize either adb or fastboot commands from my PC.
I cannot even factory reset it.
What to do next?
My god, overall my impression so far? The hardware itself are near Apple premium quality.
But it looks like Amazon tried to follow Apple's footstep in term of software too.
Also this got me thinking of not having an android without any dedicated navigation buttons.
Click to expand...
Click to collapse
My Kindle Fire HDX (3rd Gen) is stuck in fastboot. After reading some forums, people don't recommend sending attempting to "recover" from the fastboot for the likelihood of bricking the device. Would you mind sharing the vulnerable bootloader + the twrp and the CM file you used? Along with the commands you used to flash. For some reason, the device isn't flashing the twrp image I have. I receive a "unknown partition" error when I try to flash twrp.
Thank you in advance.
Praxxer1 said:
My Kindle Fire HDX (3rd Gen) is stuck in fastboot. After reading some forums, people don't recommend sending attempting to "recover" from the fastboot for the likelihood of bricking the device. Would you mind sharing the vulnerable bootloader + the twrp and the CM file you used? Along with the commands you used to flash. For some reason, the device isn't flashing the twrp image I have. I receive a "unknown partition" error when I try to flash twrp.
Thank you in advance.
Click to expand...
Click to collapse
Answered elsewhere (one 48 other threads you posted to with the same question)
Stuck in Fastboot. I can flash and write and reboot, but 100% of the time it returns to FB. I had flashed freedom boot 8.46 2x. I most recently had lineage 14.1 and twrp 2.78.
Tried every tool in the book zero have worked.
UPDATE 6-9, out of fastboot, now stuck on kindle logo.
tia
KF 8.9hd jem

Lg K7 Sms uninstalled and some stock apps now camera wont work

I rooted my Tmobile LG k330 using kingroot and then unistalled it and replaced it with superuser. A couple weeks after, my camera stopped working and I couldnt even access my gallery at first. Wait.. It gets better. My sms starts continually alerting me that it has stopped and I had to use titanium pro to freeze the app so it would stop flashing . Eventually I uninstalled it and installed a non stock version from the playstore. All well and good but I have tried every trick out there on how to get my camera to start working again but every technique out there never worked for me. First off, superuser stops working and says that I have no bootlaoder on my mobile and the site it sends me to is of no use and is confusing to figure out how I lost booloader in the first place. Back to my camera.. So it says that it is unable to work even with other playstore camera apps bc another app was using camera but no matter what forum advice out there tells me to do to find out what maliscious app could be the culprit and even through process of elemination tactics using safety mode I cant locate the real issue. My software update wont update. It goes to restart and as its almost half way through installing it reads error and freezes so that I cant even do a hard reset. Im at the end of my ropes and dont know what to do. No factory reset bc of uninstalled stock with no back up. Cant I somehow reinstall stock apps from lollipop through a particular site? I would would wipe everything on my mobile just to return it to its original function. Is there a way to flash an LG Software system with the same original bootloader and stock apps thatI originally had on my phone
Hello, Damian0402.
I do not know what to say in regards to the camera / SMS suddenly not functioning. I'd assume that means you tampered with them or perhaps something else you installed tampered with them at some point (although that's moot at this point and really no sense in discussing it, unless it happens again).
Flashing the phone to factory stock:
I'd suggest you visit this link, download the image for your phone ("K330" f / h / i / j / k / L -- Which?): https://mega.nz/#F!sdwRDLbZ!yPOiRPv5QJS_9I4hzL4ptQ!YBRwWazA
You need to look up exactly what K330 image you need to flash with. I use MetroPCS and is listed as "m" in the software under "About" in my phone, but I actually run the "MS330 10i" shown in that website. Try Googling everything about your device.
Tool to use:
I can not say beyond a doubt that this will function with a T-Mobile version, but I have no reason to doubt it!
You can use the "LG UP" software to flash the stock ROM firmware (found at that link; The KDZ file is ~1GB or more).
You'll want to download the Lab v1.10 version of LG UP: https://www.mylgphones.com/download-lg-up-software
On the right panel, you'll see "LG USB drivers" hyperlink. This'll ensure you have the proper drivers.
Initiating "download mode":
Power down your device completely. Press and hold the "VOLUME UP" key; While holding the VOLUME UP KEY: Insert the USB cable (it should already be attached to the PC).
The phone will automatically power on and the "DOWNLOAD MODE" image should appear, nearly instantly. After this appears: Release the VOLUME UP key.
You should be able to place the phone down and run the LG UP software. You need to select "UPGRADE" (not "refurbished"), then locate the KDZ file (bottom right corner of the program is a vertical "3-dot" image; Used to navigate to your *.kdz file).
Merely hit "START" and wait about ~300s (~5m). The phone will reboot itself. You can exit the program at this point by pressing "Exit."
That's all.
Regarding Kingroot / Kingoroot:
I'm not entirely sure I trust those "one-click-root" programs. There's nothing harmful about them, however: You should be informed that you can root your own phone WITHOUT those programs!
Tools you'll need and use:
TWRP (Team Win Recovery Project)
SuperSU (SuperUser; The same type program Kingroot/KingOroot install)
ADB (Android Debug-bridge -- Which Kingroot uses remotely I suspect)
This is a thread I wrote last night; I use the MetroPCS variant, but the steps are identical: https://forum.xda-developers.com/lg-k7/how-to/guide-lg-k7-ms330-concise-tutorial-t3722050
You should be able to use the TWRP listed in the forum post (LG K7 (M1)). You might want to NOT erase/flash recovery partition first. Just live-boot it. If it works: Great! Decide if you want to flash it.
I hope this solves your issues! Also: TWRP / ADB can be used to create a FULL backup directly on your PC without using the phone's internal memory or external memory at all. Which is awesome if you have an 8GB (uncompressed) backup file to make.
My two cents: Rooting the phone yourself with ADB/TWRP/SuperSU is a very fun, interactive and easy process!

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