[Q] LG G2 4.4.2 Boot issue - Android Q&A, Help & Troubleshooting

Hi,
I just did a system update on my phone this weekend and found that after the update the phone will not boot, I have tried everything to get it to boot but it just won't boot, I have also attempted to plug it into my computer to re-install the OS but the computer won't recognize it as it doesn't fully load the OS.
If anyone knows how to fix this issue please let me know.

You've already reset the phone? How did you update? OTA? Which version of the G2 is it? For the PC, you probably don't have the correct drivers or it's not in the correct mode for the drivers to load.

Related

Odin won't detect i9100 in download mode after new kernel

Hi,
So I just purchased a Samsung Galaxy S II, and I've been trying a few different ROM's found on this site. The last thing I did was actually revert back to a stock Samsung Kernel and firmware. This worked fine, but it unrooted my device, which I knew would happen, but now I'm not able to root it again because when I put the device into download mode, ODIN, or better yet, my computer won't detect the device.
I have all the drivers installed, and I also deleted them all, and Kies, and started from scratch again after searching XDA for similar issues.
I don't believe this to be a driver issue, since I was able to root my device, and swap roms before I went back to the official kernel and firmware. I'm with Bell in Canada, so the versions I went back to were not the official Bell versions, since Samsung has not made them available.
I have a Mac, but I've been using Windows 7 and Odin under VMWare. I can connect my device to either OSX, or Windows 7 when the device is not in download mode, and everything works fine, and Odin detects the device (Not that that does any good of course)
When I connect the device under download mode, the Mac detects the device and asks me if I want to connect it to my Mac, or to Windows (As it should) but no matter which one I select, neither OS acknowledges the device after that point, where as when I'm not in Download mode, both OS's detect the device fine.
After all my troubleshooting with my computer based off of what I found online here, The only conclusion I have left is that there is something missing on the device that allows it to be found under download mode, but that aspect of all this is beyond my current skill level.
Anyone have any ideas?
Are you pressing the Volume Up button to continue in Download mode? Besides, Virtual machine isn't recommended I think.
Yes, Once the Custom ROM warning comes up, I press the Volume up button to continue.
That wasn't even necessary on the Stock Bell ROM. The warning didn't come up at all.
VM has been working fine up until now, so I don't think that's the problem, but I have been thinking of trying this on my old laptop that runs on windows if nothing else pans out.
Scott56 said:
Yes, Once the Custom ROM warning comes up, I press the Volume up button to continue.
That wasn't even necessary on the Stock Bell ROM. The warning didn't come up at all.
VM has been working fine up until now, so I don't think that's the problem, but I have been thinking of trying this on my old laptop that runs on windows if nothing else pans out.
Click to expand...
Click to collapse
Have you found anyway to Make Odin recognize to phone in download mode?? Im still struggling with that. my phone is on stock kernel and not rooted yet, ODIN finds it fine when the phone is on and USB Debugging is on, but once I put the phone on download mode it wont recognize it, I dont know why..
Could it be because of the ''SAMSUNG Mobile MTP Device'' driver failed to install correctly??
all other drivers are installed correctly.. I have tried to get the driver mentioned above to install correctly but it fails every time, with USB debugging on and off, i have wiped the phone and installed Kies and the drivers several times, Im clueless right.. anyone have any idea please help??
I myself am also suffering from this problem. However, USB seems to function fine while the phone is booted up or in recovery (For ADB). I'm wondering if necessary files may have become corrupted or deleted in reference to USB drivers (phone side mind you) that are used in download mode.
edit: It's also recognized in recovery mode.
Even if it can't be fixed I'd still like to understand why.
-Simply D
was looking for help on this and saw this thread, same problem too..
Connects to Odin and Kies fine when switched on "normally", can use USB mass storage mode Etc.
comes up with a USB device has malfunctioned message on PC when I connect USB cable when switched on and in download mode
EDIT:- just to add, if I try upgrading firmware via Kies it gets to the point where it switches the phone to download mode to upgrade it and has the same issue even with an official upgrade
Figuring download mode is outside the normal boot procedure, I hoped on an off chance that pulling my battery and sim for a few minutes would reset it. It did indeed. Download mode is now functional again, just to be certain I tested it right before pulling the battery to make sure it was still broken. And multiple flashes and reboots afterwards seem to confirm that it has returned to normal.
Anyone else who solves it with this method, please report back.
-Simply D
SimplyD said:
Figuring download mode is outside the normal boot procedure, I hoped on an off chance that pulling my battery and sim for a few minutes would reset it. It did indeed. Download mode is now functional again, just to be certain I tested it right before pulling the battery to make sure it was still broken. And multiple flashes and reboots afterwards seem to confirm that it has returned to normal.
Anyone else who solves it with this method, please report back.
-Simply D
Click to expand...
Click to collapse
Tried this and it didn't work for me :/ going to give it another try later, thanks for the suggestion either way

Bricked Tablet

I really Need Help! My computer wont recognize my tablet in fastboot mode, and my tablet wont read my micro SD card, also when i turn it on normally it stays at splash screen and when its plugged in to the computer the computer starts installing the drivers and it fails to install each time. I go to troubleshooting options and it states code 10. which states device cannot start.
I Have looked for ways around this, like manually installing the drivers, and my computer wont let me. Also the tablet can go to both: bootloader, and Clockworkmod recovery.
I factory reset my tablet so I cannot install anything, untill i get it to connect to my computer.
I am running Windows 7 64-bit on my computer!
Any help is very much appreciated!
Thanks!
NewDev4IOS said:
I really Need Help! My computer wont recognize my tablet in fastboot mode, and my tablet wont read my micro SD card, also when i turn it on normally it stays at splash screen and when its plugged in to the computer the computer starts installing the drivers and it fails to install each time. I go to troubleshooting options and it states code 10. which states device cannot start.
I Have looked for ways around this, like manually installing the drivers, and my computer wont let me. Also the tablet can go to both: bootloader, and Clockworkmod recovery.
I factory reset my tablet so I cannot install anything, untill i get it to connect to my computer.
I am running Windows 7 64-bit on my computer!
Any help is very much appreciated!
Thanks!
Click to expand...
Click to collapse
Did you install the naked driver from here? http://forum.xda-developers.com/showthread.php?t=1426502 if not do that first once you get that working... then you should be able to fastboot to the pc... next thing I would concider is going to twrp recovery instead of cwm....either go for an older version or go the full gambit of nvflash then install the latest twrp... after that you should be set.....I can comment more on it if you need it....
Bricked Tablet Help
Gage_Hero said:
Did you install the naked driver from here? http://forum.xda-developers.com/showthread.php?t=1426502 if not do that first once you get that working... then you should be able to fastboot to the pc... next thing I would concider is going to twrp recovery instead of cwm....either go for an older version or go the full gambit of nvflash then install the latest twrp... after that you should be set.....I can comment more on it if you need it....
Click to expand...
Click to collapse
I tried installing those drivers but it didnt work
also i used WSG_Unbricker v.1.0.3
my system is wiped
is there any way to install the operating system on it
i need a link for an update.zip
thanks
i can now only go to fastboot mode and wipe data mode.
NewDev4IOS said:
I tried installing those drivers but it didnt work
also i used WSG_Unbricker v.1.0.3
my system is wiped
is there any way to install the operating system on it
i need a link for an update.zip
thanks
i can now only go to fastboot mode and wipe data mode.
Click to expand...
Click to collapse
What do you see in device manager with the tablet plugged into the pc and running in fastboot?
Maybe this helps
I had a similar issue but my tablet couldn't be identified by windows, at first i thought it was my drivers so i tried to install new ones but windows wouldn't let me stating the same code 10. At the end it was a defective usb cable, i bought a new one and everything worked all right the first time i plugged it in. And by the way i was stucked at the CWM loop. Hope this helps and sorry for my bad english.
Bricked tablet
sj010489 said:
I had a similar issue but my tablet couldn't be identified by windows, at first i thought it was my drivers so i tried to install new ones but windows wouldn't let me stating the same code 10. At the end it was a defective usb cable, i bought a new one and everything worked all right the first time i plugged it in. And by the way i was stucked at the CWM loop. Hope this helps and sorry for my bad english.
Click to expand...
Click to collapse
Thanks
Im not sure if it is a bad usb cable, i think it is my computer because my computer doesnt even recognize my iphone and i have itunes installed,
i think it is partially due to a funky computer for me.
BRICKED
Gage_Hero said:
What do you see in device manager with the tablet plugged into the pc and running in fastboot?
Click to expand...
Click to collapse
It says fastboot
I sent my tablet in to asus
just waiting on them to reply

[Q] Phone wont show up in device manager when in S/W mode

Hi.
I have an LG G2X and its completely messed messed and need to re-apply a KDZ to it. However every time I connect it when in that mode the computer never recognizes it . If I turn it on and plug it in it shows up no problem. Not sure why it does not when in S/W mode only. Im pretty sure I have downloaded all the drivers required for the phone. Any ideas what else I can try?
Thanks!

Unbrick lg l9 problem

So i stupidly installed chainfire 3d restarting my phone to a boot loop, i tried doing a hard reset still it restarted back to boot loop , I tried flashing a stock rom/kdz for my phone into lg support tool/r&d test tool, but every time i put it into s/w upgrade mode my pc dosent recognize it, it just says Usb device Not recognize , it also says device driver software was not successful , and i did
try installing my phone driver from here (LG P769 Support: Find Manuals & Warranty Info | LG USA) but yet it still dosent recognize it. I think this is the only problem thats blocking my way to unbrick my phone. I don't know if I'm installing the wrong driver or my phone.
If you know the right driver for my phone can you please reply with the link, I would be appreciated for your help.
my phone is also locked boot loader.
sorry for my bad english

Need help with softbrick!

Hello, guys.
Recently, I've tried to root a Cubot Power 4G following a guide I found online. I probably should have been more catious about it, cause now the phone is stuck on a bootloop. I tried to install a custom recovery to try and fix this, but as there was no official twrp for Cubot, I once again downloaded something that was probably shady. Thus, now the phone is stuck on bootloop, won't access recovery mode, is now turned off because battery gave out, but if I try to connect it to the pc, it will start to bootloop again. I cannot access adb, or at the least I don't know a way to, since it keeps bootlooping and I have no way to access a recovery mode(since there's no one, or at the least, if there is, it's faulty). What can I do here?
@Giordyman
Re-flash phone's Stock ROM by means od MTK Flash Tool. You have to install the Mediatek VCOM drivers before on your Windows computer, if not done yet.
jwoegerbauer said:
@Giordyman
Re-flash phone's Stock ROM by means od MTK Flash Tool. You have to install the Mediatek VCOM drivers before on your Windows computer, if not done yet.
Click to expand...
Click to collapse
I did! Or so I think... The moment I connect it to the pc, it starts bootlooping and so the pc cannot actually connect there
Bootloop is a situation where you cannot get into the "normal" Android system. Take note that as soon Android logo is shown on phone's display Android kernel got successfully initialized, ADB & Fastboot are ready.

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