[Q] Stuck In a Bootloop and can't flash stock ROM - LG Optimus G Pro

Foolishly, I was messing around in build.prop and obviously it put me into a bootloop. I can get into download mode, but not recovery or fastboot.
I planned on just flashing a stock ROM back onto the phone and followed this guide: http://forum.xda-developers.com/showthread.php?t=2420219
However, after I've put the device into download mode, the LGMobile Support Tool gets stuck at "waiting for connection". If I try to proceed with flashing the stock ROM, the installation gets stuck at this: http://imgur.com/yFSOZJe.jpg
(If I try update recovery like it suggests, it's unable to find the device)
I believe the software is not properly recognizing my phone, however all drivers seem to be properly installed. In the Device Manager, it recognizes the phone as this: http://i.imgur.com/PWWqbc1.jpg
This is what the R&D Test tool reads on my device: http://i.imgur.com/zxFiCFh.jpg
Since this is my only phone, I'd very much like it back any suggestions on how to fix this?
Thanks!

What model is it?

Try using the LGflashtools method, there is a guide in the q&a section. I would recommend you find and use the nov 22 tot file because the one in guide had a non responsive touch screen.
Sent from my LG-E980 using XDA Free mobile app

Related

Sprint LG LS980 (OptimusG2) stuck in download mode or stock recovery

Hi all. I'm not a novice when it comes to rooting and flashing but I'm stuck on this one. A friend of mine tried to install CM11 on this phone, the LS980 and somehow really jacked it up. It's stuck in a bootloop, but I can get into download mode and stock recovery. All data has been wiped. I have tried using the LGFlash tool to install the stock tot and dll but it fails. It fails because the the tool says the file is the wrong model for the phone. Here's the thing, its not. But somehow the phone now thinks its a D802 instead of an LS980. (This happened during the CM11 attempt somehow) The flash tool fails every time. I even tried the D802 files and it started to flash but failed about a 1/4 of the way through. That confirms that the phone definitely thinks its a D802, weird. When I hook it up to the LG Support tool, it tells me the phone is a testmodel!
Needless to day I've tried everything I know how. ADB sideloads, different recoveries, and I've researched for hours on end. I have hope that there's still a solution. I would be golden if I could get a recovery on it, either TWRP or CWM. Any help is appreciated.
have the same problem. simply cant recover the recovery.
My recovery for e988 g pro in lg g2. I try everything for fix the recovery but cant help it. Is there any way to re build recovery?

[Q] Stuck in download mode

Hey all,
I recently put the lolipop AOSP rom onto my G Pad, but wanted to revert it back to the stock software.
I plugged it into the computer and tried using the recovery tool, but it did not work, so I put the G Pad into download mode and it gets to a point where it has downloaded the software and is deploying it, but then fails every time.
I tried the offline KDZ method, but when the support tool loads it checks the connected device and always tells me to unplug it and try again.
Does anyone have anything in mind I could try or requires more information to offer a suggestion to me?
Thank you in advance.
I was in the same position a few hours ago. I downloaded the official LG Support tool (drivers and tool available HERE). Launch the LG Support tool, go to Options -> Upgrade Recovery and follow the steps. It should dowload the latest available official formware (V50020D) and flash it to your tablet. I'd recommend a factory reset, since you have CM installed on it. This procedure didn't erase /data (I've done it twice while trying to flash a custom recovery on it). Then you must use LG Flash Tool 2014.zip to flash an older firmware that has a bootloader that allows installing of a custom recovery. After flashing V20B or V20A, you must root it and flash a custom recovery (I'd recommend THIS ONE). It seems a little complicated, but this is the only way to un-brick it (it worked for me).
Get the apk from THIS thread after rooting your tablet (it should flash TWRP 2.8).

Need help. Flashed incorrect rom on my Vk810.

Im not that experienced but have been playing around trying to learn about roms etc. I used the flashify app to flash a rom but accidentally used the wrong rom. I grabbed the one for the v500 model instad of vk810. Needless to say it messed up. When the tablet boots it stays on the boot image for several minutes then it will attemp to update apps but gets stuck there. I have tried many fixes. The LG mobile tool doesnt work. I try to update recovery. It downloads the update but wont install. I cant force the tablet into recovery with button pushes. I have been able to put the tablet into twrp 2.7.8.1 recovery with droid explorer. From there I have tried to flash about 3 different roms that all say they should work for the vk810 but i get errors with all of them and they fail. Im not sure if there is any hope to get the tablet working again but hope someone can help.
First, I don't think you can use Flashify to flash a whole ROM at all. Definitely not recommended, even if it's is supposed to be capable of doing that. I haven't tested flashing ROMs with it so no idea if it can work or not.
Can you put it in Download mode? If so, install the Verizon LG drivers, reboot the PC and try LG Flash Tool 2014 with the 11A KDZ, you can get the KDZ from the link in my signature. It's easiest to root and put TWRP back on that old stock ROM.
FYI it would have to be in Download mode for the mobile tool to work - just in case you didn't know or didn't have it in Download mode. LG Flash Tool 2014 does the same thing as the mobile tool except the mobile tool re-downloads the newest KDZ every time you try it unless you hack it. It's much easier just downloading the KDZ separately and keeping it on file for times like this to flash with LG Flash Tool 2014.
Just remember, if you use LG Flash Tool 2014, ignore any error it throws at you. Just drag the dialog boxes out of your way, don't press any buttons in error dialogs. 99% of the time, if you just ignore them within 10-20 minutes it'll have successfully flashed your VK810 anyway.
Also, once you install the drivers and reboot, put your original USB cable that came with the VK810 into a USB 2.0 port on the PC, with the tablet completely off, hold the Up Volume button in, connect the tablet end of the USB cable and keep the Up Volume button pressed for another second or two, and you should see a very dim "Download Mode" graphic in the center of the screen. It's very hard to see. The first time you connect the tablet in Download mode to a different USB 2.0 port or Windows installation, it can take up to 10 minutes to actually load the driver you previously installed. Look in Device Manager under the Modem section to see when the driver is fully loaded by looking for the LG device entry there.
Question: I assume you mean TWRP v2.8.7.1, but I was just wondering where you found 2.8.7.1? I've only found 2.8.7.0, not that it's a big deal.

HELP! Fully wiped. Only Recovery mode is possible. Help me flash a stable ROM.

What I've done:
1. Tried LGNPST method but phone never showed up in the software
2. Tried flashing with LG official tool. That always resulted phone disconnected.[I did put my phone into download mode]
3.Tried almost all KDZ_FW_UPDATE methods they always stopped either in not responding-> close program OR extraction error
4. Tried sideloading using adb but they also resulted in "bad file" even push didn't work saying no permission to write(I think)
for adb I tried converted .zip of kdz using some guide in xda.
My phone is totally clean now. I can boot to Recovery or Download Mode. There's no file that's flashable right now. I'm in Philz touch recovery
This actually happened while I was flashing to unlock bootloader and charge went low.
I desperately want it to function properly. Please anyone with any new or updated methods, help me.
When normally trying to boot up, Google logo comes and phone switches off.
I was in F180L converted to E975.
I've INDIAN(20a) version kdz also european(10h) and korean(30e).

[Solved] Was updating to Lineage OS 17 but now I'm stuck on stock Android 8

I have the G710EMW variant. As the title states, I was trying to install Lineage OS following sirbow2's thread 'Lineage OS 16/17/GSI Install Guide for LG G7 ULM'. Using the universal unlock method, I unlocked my phone. Next step was installing 21d ULM firmware; this is where I am stuck. When I begin the installation using LGUP, the phone boots into the rooted fastboot mode instead of the download mode. I even tried switching slots but it still boots up in fastboot mode.
Also, when I am able to load the download mode, it stays at the download mode screen & doesn't actually proceed further & neither is the device detected in device manager when it is connected in the download mode.
I've rooted quite a few phones in the past but this one has troubled me a lot. It is very difficult to find time for all this when you're working a full-time job. Please help me fix this. I'm happy even just to return to the stock LG ROM (which reminds me that the same thing happens when I try using the LG Bridge tool).
Thank you!
use this thread to flash stock https://forum.xda-developers.com/lg-g7-thinq/how-to/cross-flash-oreo-pie-firmwares-lg-g7-g7-t3915303.
sinkoo1979 said:
use this thread to flash stock https://forum.xda-developers.com/lg-g7-thinq/how-to/cross-flash-oreo-pie-firmwares-lg-g7-g7-t3915303.
Click to expand...
Click to collapse
Already tried that method. Everything works fine until the phone boots to start installation. Ideally it should start in download mode but in my case, it boots into the rooted bootloader.
@Awesomeslayerg was kind enough to message me this link (https://forum.xda-developers.com/lg...to-recover-hardbrick-9008-mode-boxes-t4052841) which helped me fix my problem.
Not only was I able to revert to stock; I went ahead to install LineageOS 17 which is amazing!
Thank you, Awesomeslayerg.
This thread can be marked as fixed now.

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