So I am new to the android hacking scene and tried to root an LG K7. It's not a very high value phone, but I wanted to try to install some linux kernel on it for developer use.
I followed this guide here: https://forum.xda-developers.com/lg-k7/how-to/guide-lg-k7-ms330-concise-tutorial-t3722050
I got to the point where you erase all partitions and use LGUP to flash a rom. LGUP won't recognize the phone when it's in download mode so now I can't flash a rom or boot into the phone because the firmware was erased. It's stuck in a bootloop of the LG screen and I'm not sure what to do. I can enter download mode but I can't enter recovery mode. I installed all the drivers for my device as well as the LGUP drivers. It says the phone is an unknown model. Please help!
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I can get into cwm but everything i flash just leads me to a screen with the lg logo. Therefore, I'm trying to fast boot my phone and recover my phone but so far I've only been able to get to s/w upgrade mode and recovery stops at 15% because my computer sense that the phone isn't connected. I've tried running the recovery software in diag mode but it couldn't get past 15%. Can someone please help me?
Mensarius said:
I can get into cwm but everything i flash just leads me to a screen with the lg logo. Therefore, I'm trying to fast boot my phone and recover my phone but so far I've only been able to get to s/w upgrade mode and recovery stops at 15% because my computer sense that the phone isn't connected. I've tried running the recovery software in diag mode but it couldn't get past 15%. Can someone please help me?
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2 options
Download LG mobile support (B2CAppSetup.exe) and select recover your phone. Your phone must be in S/W update mode and you must remove/comment LG server line in hosts file (for offline flash)
Try to use Lelus fast boot to flash ICS u-boot & x-loader (according to your phone model). And try to offline flash again. JB firmware does not work with offline flash.
Hello all, i used yesterday de CWM software, my Lg was rooted, and i just tried install a recovery mode. Afther this i got Security Error.
I saw all way to fix on internet but my phone i can only put on S/W Upgrade mode, no Download Mode, no master reset, nothing.
Someone can help me how can i use the S/W Upgrade mode to fix it?
acipriano said:
Hello all, i used yesterday de CWM software, my Lg was rooted, and i just tried install a recovery mode. Afther this i got Security Error.
I saw all way to fix on internet but my phone i can only put on S/W Upgrade mode, no Download Mode, no master reset, nothing.
Someone can help me how can i use the S/W Upgrade mode to fix it?
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Click to collapse
S/W update mode is enough to do offline flash your kdz or recovery your phone via LG mobile support tools. Please select one of those 2 methods to recover your phone.
You need to unlock bootloader before install custom rom or recovery.
Take the kdz files from cmahendra's thread and use S/W mode to flash it.
Please don't forget to unlock your boot loader next time.
i install stock firmware posted by tungkick this post , New root android 6.0 H901 i am flash lgup tot file LGH901AT-01-V20j-310-260-JUL-12-2016-ARB02+0ROOTTWRP. flash complete and my phone restart but not enter rom mm,any time restat cell phone enter twrp mode and not mount any partitions ,not enter download mode ,i am very up set plz help me any one
Hi,
I have a lg G5 H850 stuck into "fastboot for bootloader unlock" mode and recovery or download mode are not working, I tried to recover it by unlocking the bootloader but the OEM unlock option is disabled so I cannot flash anything.(device locked error error message)
I saw a YouTube video yout ube.com/watch?v=ImJ1xXXzV6s with my exact issue but he is not responding to my messages.
Is there any option to unbrick this device?
Thanks a lot in advance to all!
yoanc244 said:
Hi,
I have a lg G5 H850 stuck into "fastboot for bootloader unlock" mode and recovery or download mode are not working, I tried to recover it by unlocking the bootloader but the OEM unlock option is disabled so I cannot flash anything.(device locked error error message)
I saw a YouTube video yout ube.com/watch?v=ImJ1xXXzV6s with my exact issue but he is not responding to my messages.
Is there any option to unbrick this device?
Thanks a lot in advance to all!
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Click to collapse
Same here
happened after using the wrong dd command to get rid of the boot loop
boot loop still there, but phone bricked lol
https://forum.xda-developers.com/showpost.php?p=77833566&postcount=21
Hi guys,
it's been more than two hours that I seek the solution to this same problem with next to me the LG G5 bootllop.
All other solutions give nothing:
- unlook via fastboot makes a mistake because the debugging option is not enabled
- the download mode does not remain more than 15 seconds
Guys, have you found a way out of this problem?
MathFR34 said:
Hi guys,
it's been more than two hours that I seek the solution to this same problem with next to me the LG G5 bootllop.
All other solutions give nothing:
- unlook via fastboot makes a mistake because the debugging option is not enabled
- the download mode does not remain more than 15 seconds
Guys, have you found a way out of this problem?
Click to expand...
Click to collapse
You can try getting the .kdz for your phone (e.g. off lg-firmwares.com), use the WindowsLGFirmwareExtract tool to extract the .dz out of the .kdz, then use the tool to extract the laf_6.bin out of the .dz. You can then flash this in fastboot mode using a command like
Code:
fastboot flash laf laf_6.bin
Make sure to use the same .kdz as your running firmware.
I had the same problem with Download Mode as you (restarted after 15 seconds). I extracted laf_6.bin from the H85030e KDZ firmware (whose boot stack was in use), and flashed its LAF (i.e. Download Mode) volume over the laf partition. After this Download Mode stopped restarting after 15 seconds, and I was able to use LGUP (and you would be able to use UPPERCUT) to flash the full KDZ.
(I proceeded to start the phone in bootloader/fastboot mode and flash TWRP recovery as well, with my unlocked bootloader.)
obs3rv said:
You can try getting the .kdz for your phone (e.g. off lg-firmwares.com), use the WindowsLGFirmwareExtract tool to extract the .dz out of the .kdz, then use the tool to extract the laf_6.bin out of the .dz. You can then flash this in fastboot mode using a command like
Code:
fastboot flash laf laf_6.bin
Make sure to use the same .kdz as your running firmware.
I had the same problem with Download Mode as you (restarted after 15 seconds). I extracted laf_6.bin from the H85030e KDZ firmware (whose boot stack was in use), and flashed its LAF (i.e. Download Mode) volume over the laf partition. After this Download Mode stopped restarting after 15 seconds, and I was able to use LGUP (and you would be able to use UPPERCUT) to flash the full KDZ.
(I proceeded to start the phone in bootloader/fastboot mode and flash TWRP recovery as well, with my unlocked bootloader.)
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Click to collapse
interesting. I am in Bootloop from two weeks. Tried to much time lineage 17.1 and then leave the phone so many hours in order to boot in lineage that at some point it won't enter system anymore.
So I passed to LGUP that works only with UPPERCUT and only with UPGRADE functions even if I installed all the drivers.
Maybe I need a "megalock.dll" file?
But the way one week trying to boot in system after flashing KDZ files with UPPERCUT and after many and many bootloop I finally enter the system with H85020a_00_OPEN_EU_OP_1030.kdz
But after one reboot it returns the problem.
I am desperate.
Have you got a phone name to buy that is unbrickable?
Hi everyone, I bought this phone working from second hand but the seller told me he tried to unlock the bootloader without success and the phone still loose the fingerprint sensor, so I decided to unlock the bootloader successfully following THIS thread and made a downgrade to Android 9 according to THIS other tutorial hopping to get it work again but I wasn't able to do it, so I decided to just use LGUP to install the same Android 12 that I had but the problem started at this point because once the KDZ was installed successfully, the deviced got a bootloop but I still was able to get into EDL, Fastboot and Download Mode, so I tried the steps from THIS other thread to unbrick it but it got even worse at this point, I flashed all the abl, xbl, etc. partitions and the "rawprograme files" via QFIL and then the phone won't even gave any life signals. I contacted someone that some months ago had the same problem and he told me that I could get into EDL by short pining the test point on the motherboard, which actually worked, so I extracted the KDZ Android 9 rom that I flashed in the first place to get the original abl, xbl, etc. partitions that I crossflashed from a v50 (Which I downloaded from the corresponding thread for unbrick), in other words I flashed the same partitions with the correct v50s files instead other model ones. So now this is where I'm right now, the phone don't turns on at all but when I connect it to the PC it gets recognized as LGE Android Platform USB Serial Port (COM11) and the buttons combinations don't work at all, so still can't get into Download mode by any method or even turn off the device, but I still can disconnect the battery and short pin the Qualcomm 9008 mode to use QFIL.
Would someone please be so kind of telling me how could I recover the Download Mode to use the COM4 and COM5 ports to flash the phone via LGUP?. According to THIS other thread, I could get the correct XML "rawprograme files" for my device (which I crossflashed with the v50) from a KDZ using some tools and Python, but I have to be honest: I DON'T KNOW HOW, even with the step by step tutorial.
At this point I think this would be the right step, to flash all the original files for my model and get the Download Mode back to be able to flash the KDZ rom via LGUP and update via OTA to Android 12 again to avoid the bootloop problem.
try to reflash(QFIL method) modified abl should get the download mode back
darrelama said:
try to reflash(QFIL method) modified abl should get the download mode back
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Click to collapse
Thanks for replying, but I have some questions:
1. The abl file you mean is the engineering one? And...
2. Would you be so kind of telling me how to flash via QFIL? I've seen that it's possible but as far as I know, I need a specific type of rom files to do it, and I don't know how to convert a KDZ or where to download a QFIL ROM.
Thanks!
iMarzateD said:
Thanks for replying, but I have some questions:
1. The abl file you mean is the engineering one? And...
2. Would you be so kind of telling me how to flash via QFIL? I've seen that it's possible but as far as I know, I need a specific type of rom files to do it, and I don't know how to convert a KDZ or where to download a QFIL ROM.
Thanks!
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Click to collapse
yes, engineering one mentioned here （THIS）
QFIL>Tools > Partition Manager
read abl_a and abl_b to backup then load abl engineering file to both
basically the same steps up to the following:
"Go back to Partition Manager and right click on abl_a again then select Manage Partition Data, then Select Load and choose the abl engineering file.
Do the same for abl_b."
then try download mode
darrelama said:
yes, engineering one mentioned here （THIS）
QFIL>Tools > Partition Manager
read abl_a and abl_b to backup then load abl engineering file to both
basically the same steps up to the following:
"Go back to Partition Manager and right click on abl_a again then select Manage Partition Data, then Select Load and choose the abl engineering file.
Do the same for abl_b."
then try download mode
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Click to collapse
Hello again, already tried flashing the engineering abl but I still can't get into download mode. The phone keeps off the whole time and by plugging in the USB cable, no matter what button combination, the PC always recognizes it as the same LGE Android Patform USB Serial Port (COM11), the only other state of the device is the Qualcomm 9008 by pinning the motherboard. This specific COM11 state never was able to flash anything by PC, I don't know what actual mode is, but when I was able to set the devide in Download Mode the PC always showed 2 devices in the Device Manager, the COM5 and the COM4, that way I knew I was able to use the LGUP to flash. I'm thinking that I'm not setting the phone on the correct state to flash by any method, but since the buttons seems not to work, I don't know how could I do it.
While on this mode "LGE Android Patform USB Serial Port (COM11)", try to hold both power and vol- for some seconds until the "LGE Android Patform USB Serial Port (COM11)" disappear from your PC device manager and immediately release both and now hold vol+ button to get into download mode.
You can do it while on the 9008 mode too though.
Maybe that can help.
I have LUNs backup for v50s but I can't upload it due to my internet plan quota limit.
ardian1899 said:
While on this mode "LGE Android Patform USB Serial Port (COM11)", try to hold both power and vol- for some seconds until the "LGE Android Patform USB Serial Port (COM11)" disappear from your PC device manager and immediately release both and now hold vol+ button to get into download mode.
You can do it while on the 9008 mode too though.
Maybe that can help.
I have LUNs backup for v50s but I can't upload it due to my internet plan quota limit.
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Click to collapse
Thanks, I'll try that for sure to see if I can get into the Download Mode or something. I would appreciate so much if you could share your backup, since I think I could restore the whole firmware with it, but I don't have any experience on the "LUNs" tho. I'm any case, I don't have too much time every week to give it a try, so I hope tomorrow I could test the combo you say.