Un-debrickable state ? - LG V20 Questions & Answers

Hello guys,
I'm fairly certain I'm stuck in an un-debrickable state but I'll ask just in case. My phone is F800K.
I was toying around with LGUP in order to downgrade and root my phone. So far, so good.
I then tried to update to the latest android 9 again, but keep the root active. That's where things started to go south, so I decided to go back.
I followed a couple of "back to stock" guides but now I'm screwed.
- The phone does not boot.
- Download mode is broken, the phone doesn't connect to my computer while in download mode, so it's unusable.
- TWRP is gone. When I try to boot to recovery after yes both times I get nothing. Not the stock recovery and not TWRP, it just tries to boot as usual.
- Can't seem to go back into fastboot either. I tried VOLDOWN + plug-in the phone about 200 times now, to no avail.
Is there another way that I'm missing ?
Thanks.

growiel said:
Hello guys,
I'm fairly certain I'm stuck in an un-debrickable state but I'll ask just in case. My phone is F800K.
I was toying around with LGUP in order to downgrade and root my phone. So far, so good.
I then tried to update to the latest android 9 again, but keep the root active. That's where things started to go south, so I decided to go back.
I followed a couple of "back to stock" guides but now I'm screwed.
- The phone does not boot.
- Download mode is broken, the phone doesn't connect to my computer while in download mode, so it's unusable.
- TWRP is gone. When I try to boot to recovery after yes both times I get nothing. Not the stock recovery and not TWRP, it just tries to boot as usual.
- Can't seem to go back into fastboot either. I tried VOLDOWN + plug-in the phone about 200 times now, to no avail.
Is there another way that I'm missing ?
Thanks.
Click to expand...
Click to collapse
It does sound like a hard brick... you said fastboot is hosed, do you have access to adb in any way?
Sent from my moto g(6) play using Tapatalk

None that I know of, that's the issue. If I had access to either fastboot, adb or download mode, I could most likely salvage this, but I can't seem to be able to.
The weirdest thing is the broken download mode, I couldn't find anybody with the same issue...

growiel said:
None that I know of, that's the issue. If I had access to either fastboot, adb or download mode, I could most likely salvage this, but I can't seem to be able to.
The weirdest thing is the broken download mode, I couldn't find anybody with the same issue...
Click to expand...
Click to collapse
On my lg tribute HD (ls676) fastboot was removed by lg themselves on Android 6.0.1 quietly with a security update and download mode never worked right for me. Without access to fastboot, adb or even diag mode it really sounds like you have a hard brick. if i can find a solution of some kind, I'll definitely let you know.
Sent from my moto g(6) play using Tapatalk

What would "diag mode" be and how can I check if I can access it ?

Small update for people who stumble upon this thread, I managed to save my phone by using the Qualcomm Test Point, see here: https://forum.xda-developers.com/showpost.php?p=81697447&postcount=128

Related

D800 I'm sure it's bricked, just want clarification

Alright, so I'm stuck in boot loop, the only recovery I can boot into is stock, which doesn't help obviously. I can't get into download mode, and my computer doesn't detect it. Just tell me the bad news.
Have you removed the LG drivers completely and reinstalled them? How did you get into the bootloop in the first place?
Sent from my LG-D800 using XDA Premium 4 mobile app
whynottry said:
Alright, so I'm stuck in boot loop, the only recovery I can boot into is stock, which doesn't help obviously. I can't get into download mode, and my computer doesn't detect it. Just tell me the bad news.
Click to expand...
Click to collapse
Let me see.. If by download mode you mean the blue dots(circles) then - no, you're not in download mode. But if you can enter teh real download mode (it should go past the circles) then you can flash it ( you should be able to flash it).
More info please.
bender_007 said:
Let me see.. If by download mode you mean the blue dots(circles) then - no, you're not in download mode. But if you can enter teh real download mode (it should go past the circles) then you can flash it ( you should be able to flash it).
More info please.
Click to expand...
Click to collapse
There's a lot of info in his previous posts. We went through hell and back trying to fix it. Hopefully you can give some better guidance.
Art Vanderlay said:
There's a lot of info in his previous posts. We went through hell and back trying to fix it. Hopefully you can give some better guidance.
Click to expand...
Click to collapse
Damn. I've read "I CAN get into download mode and ...." :/
will look into it to help out
one question : how did you brick it ?
Let me copy paste my previous three posts.
"When I originally tried to install TWRP, I was rooted in a stock rom, or whatever you call it when you're rooted and haven't installed a rom yet. When I tried originally, I went through CWM and installed it through that, but whenever I rebooted into recovery, I got the android with the caution sign in its chest. I kept trying to install it, and eventually I believe I used the flashify app to install it(the version I believe was 2.6.3.3) and I tried to boot again and it went into a boot loop, and began making a bunch of drives. I used this http://forum.xda-developers.com/show....php?t=2582142to get me into TWRP, and it worked. Problem is, I have no roms, no backups, no download mode, and my computer only recognizes my phone as 'g2'. I tried to install adb drivers manually so that the computer would recognize it as an adb device, but it gave me error:closed, and that's where we are right now. Quite a hole I have dug myself into, huh?"
"Ok, so I went back into linux -- I have dual boot for windows 7 and ubuntu -- and for some reason adb worked there, so I was able to adb sideload a cwm .img. But of course, I got excited because I thought it would just fix it but now I'm stuck in fastboot mode, and still can't get into download mode."
"I tried it, and now it is stuck in a bootloop and isn't detected by my computer. Only thing I can boot into is stock recovery. Looks like this is the end of my G2.."
I truly do think there's nothing that can be done, just from a logical standpoint. It isn't detected by anything on the computer and can only boot stock recovery which doesn't help at all. I do appreciate the help, though.
bender_007 said:
Damn. I've read "I CAN get into download mode and ...." :/
will look into it to help out
one question : how did you brick it ?
Click to expand...
Click to collapse
Ugh..so no fastboot either :/
fastboot was good.

[Q] Cant go back to stock by any means

Hello everyone,
So ive been lurking on these forums for some time now looking for a solution for the mess I just created, but its been so long now that I want to ask if anyone can help me out now.
The situation is I bought a LG G2 AT&T, and then proceeded to root, recovery and everything was flawless, but I tried to install another ROM and this is went everything went to hell (Im from Mexico). It went all black and with the "Fastboot mode activated" and stuff so I went an put it on download mode and tried by all possible ways, the LG Flash Tool and the LG Flash tool 2014, both ways do not seem to bring back my phone to life.
Whenever I try to install it like this, I get this error with the D800AT FW. I get this error.
And whenever I try to install with D802 FW. I get this one as well.
When I try with the Lg Flash Tool 2014 method. I cant get it to 100%, I always get stuck on 99% And then it crashes.
I am really running out of options here, the phone is recognized by the PC, but I cant get to install a normal working stock ROM.
Any pointers, or help, would be greatly appreciated.
Thank you.
EDIT:
Apparently, I cant post images just yet to show you the exact error. But for the first 2 errors, I get something like this.
"DOWNLOAD FAIL! Check phone or DLL" both for D800 and D802
If you have twrp as your recovery you can adb sideload a rom onto your device from your computer. Google how to sideload adb with trwp installed and follow the instructions. If your phone is recognized it should be fine.
Sent from my LG-VS980 using XDA Free mobile app
TexasRules777 said:
If you have twrp as your recovery you can adb sideload a rom onto your device from your computer. Google how to sideload adb with trwp installed and follow the instructions. If your phone is recognized it should be fine.
Sent from my LG-VS980 using XDA Free mobile app
Click to expand...
Click to collapse
First of all, thank you for your response.
Now, it is still recognized, but I tried to flash it with some DLL a guy provided on this one thread (http://forum.xda-developers.com/showthread.php?t=2663369) and it didnt complete, it just froze on 94% and now I cant get to Download mode.
I saw about the adb sideload, but I cant seem to access to Recovery now. Tried to, but all I get is some kind of bootloop just showing the LG and android with the open belly and then back to LG.
Yoso14 said:
First of all, thank you for your response.
Now, it is still recognized, but I tried to flash it with some DLL a guy provided on this one thread (http://forum.xda-developers.com/showthread.php?t=2663369) and it didnt complete, it just froze on 94% and now I cant get to Download mode.
I saw about the adb sideload, but I cant seem to access to Recovery now. Tried to, but all I get is some kind of bootloop just showing the LG and android with the open belly and then back to LG.
Click to expand...
Click to collapse
So the three finger method only gets you the android with the belly up? Is your phone still recognized? I'm on Verizon but i think with other phones it's the same process. If you have no recovery you need to tot back to stock. I've only done it once but it did work. This is what i used to fix my problem when adb didn't work. Lots to read but it does work and people will answer if you have a problem http://forum.xda-developers.com/showthread.php?t=2797190.. Good luck man.
Sent from my LG-VS980 using XDA Free mobile app
TexasRules777 said:
So the three finger method only gets you the android with the belly up? Is your phone still recognized? I'm on Verizon but i think with other phones it's the same process. If you have no recovery you need to tot back to stock. I've only done it once but it did work.
Sent from my LG-VS980 using XDA Free mobile app
Click to expand...
Click to collapse
If I try to enter Recovery I enter the stock one and just asks for a Factory Reset... I can not enter download mode now, I get fastboot mode only when I try download mode. Phone is recognized by computer when I connect it, but when I try to enter Download, it does show the device on device manager, but it sounds weird and I cant do anything.
Im really starting to lose it.
Yoso14 said:
If I try to enter Recovery I enter the stock one and just asks for a Factory Reset... I can not enter download mode now, I get fastboot mode only when I try download mode. Phone is recognized by computer when I connect it, but when I try to enter Download, it does show the device on device manager, but it sounds weird and I cant do anything.
Im really starting to lose it.
Click to expand...
Click to collapse
If you see hit enter for factory reset (white screen) hit yes. It will enter the recovery. Twrp in this case. If the above program doesn't work but you can get into twrp download a full stock att rom... Download koush's universal drivers (google it) and watch this video at 4:20 he explains in english perfectly how to side load a rom. ADB Sideload - Flashing Zips with TWRP & PC (Expl…: http://youtu.be/YP1LVOKgwQM.. Fingers crossed man.
Sent from my LG-VS980 using XDA Free mobile app

Mode download doesn't work

Hello,
I want upgrade my LG G2 with a new rom 5.xX
This phone have only the operator update. No custom, no trwp, nothing...
I installed drivers and when i want access to download mode. I can't. I use the good proccess with vol up then plug usb cable always with vol up presses.
follow this procces after a little moment my phone show me battery logo charging.
So i can't access to download mode.
I would use this process
t was NOT bricked. I finally tried playing around with the LG Mobile Support Tool (B2CAppSetup.exe). Of course it detected that my phone already had the latest firmware from T-Mobile, but then I clicked Options>Upgrade Recovery.
It downloaded for a while then I noticed it had put my phone into download mode (it said "Rooted" in red letters at the bottom). Then it flashed the same firmware over and I immediately tested, it entered download mode right away. But I didn't end up needing that as Stumproot was able to brute force it now after the recovery flash.
Anyway, I couldn't find an answer anywhere else. Most results also have a bricked phone, but that wasn't my issue. This solved my problem and maybe it could work for others.
but it's impossible for me to install B2appsetup on my pc the installation begin then stop after 5s then nothing.
I have Win 10.
Do you have a solution for me , please??
poupinej said:
Hello,
I want upgrade my LG G2 with a new rom 5.xX
This phone have only the operator update. No custom, no trwp, nothing...
I installed drivers and when i want access to download mode. I can't. I use the good proccess with vol up then plug usb cable always with vol up presses.
follow this procces after a little moment my phone show me battery logo charging.
So i can't access to download mode.
I would use this process
t was NOT bricked. I finally tried playing around with the LG Mobile Support Tool (B2CAppSetup.exe). Of course it detected that my phone already had the latest firmware from T-Mobile, but then I clicked Options>Upgrade Recovery.
It downloaded for a while then I noticed it had put my phone into download mode (it said "Rooted" in red letters at the bottom). Then it flashed the same firmware over and I immediately tested, it entered download mode right away. But I didn't end up needing that as Stumproot was able to brute force it now after the recovery flash.
Anyway, I couldn't find an answer anywhere else. Most results also have a bricked phone, but that wasn't my issue. This solved my problem and maybe it could work for others.
but it's impossible for me to install B2appsetup on my pc the installation begin then stop after 5s then nothing.
I have Win 10.
Do you have a solution for me , please??
Click to expand...
Click to collapse
so you have tmobile. right?
and only 5.0.2 lillipop is availabe stock.. if you go asop or cm the theres 5.1.1- 6.0
then do what the guide says to do here.
http://forum.xda-developers.com/showthread.php?t=2432476
I can't do that because I don't have the download mode
poupinej said:
I can't do that because I don't have the download mode
Click to expand...
Click to collapse
try the skr tools , with the nuke download . read as i havent used it but i read that might bring download. the other way is to short circuit the motherboard.. but ill go read skr tools if i was you.

S7 Edge Hero2lte Exynos SM-G35F bricked device

Hi Guys,
Today I think I bricked my phone and I would appreciate any help.
I will describe the whole situation.
So around 2019 May, I rooted my device and decided to flash a stock based,debloated custom rom. Everything work just fined including downloading mode and recovery menu. Today, I decided to try out [S7/S7 Edge][OneUI Pie][JetBlackUI] LightROM, however strangely I was not able to boot either to TWRP neither to downloading mode via key combination.
However I had install TWRP app and from there i was able to boot to recovery mode,install the new rom and try it out.
For some reason root was not enabled in the new rom, so i figured I will try to do it via TWRP however I was unable to boot, since root access is needed to boot from TWRP app + key combo still did not work.
After searching on google, I found a poprgram which can do the trick. (Recovey-Download (CMD)
With this I was able to boot to recovery mode. Now I thought, since all this mess up was started with the new roms, I decided to restore my original stock rom, which I had a back up of. It booted up first and seemed okay, but I was curious if this solved the issues with the key comb, so I tried it going downloading mode, but it only worked with the program ((Recovey-Download (CMD)), and I saw that it is probably not gonna be good, since it only had the blue screen, but no data in the upper left corner.
Then I restarted the device and now it say " Custom binary blocked by FRP lock". and turns off itself.
I saw that FRP lock could be solved easly with Odin fresh install, problem is I have no idea how to go downloading mode. ( Assuming at this point I still can).
Sorry for the long essay but i think the more detail the easier to diagnose. Also, thank you for reading.
I would greatly appreciate any help.
BR
Csaba
Managed to solve it with USB JIG.
Is your phone an Exynos/Snapdragon variant?
csesztes said:
Managed to solve it with USB JIG.
Click to expand...
Click to collapse
Hey, how did you manage to get your phone into dl mode with an USB jig? I want to try this out, but you're the only one here who's confirmed that you were able to do this on an S7 Edge.

Stuck in rescue mode after tried flashing stock firmware

Good evening! I hope you can help me.
I flashed LineageOS 14.1, but I wanted to go back to EMUI. I made all the wipes and tried to flash different stock firmwares through a forced update (volume buttons + power button), but it never worked. At that point, I read about a guy in this forum who suggested to create a flashable zip with Huawei Update Extractor: I followed the suggestion and tried to flash it with TWRP. No error was given, but when I tried to restart, TWRP told me I had no OS installed. I thought it was strange, so I tried to restart anyway. That's when I got in rescue mode. I can't get into the recovery and I can't use fastboot. What rescue mode shows me is:
RESCUE MODE
Attention!
Please update system again
Update User Guide:
*link*
*android avatar*
Error!
Func NO: 10 (boot image)
Error NO: 2 (load failed!)
Pressing the three buttons, I'm able to force an update. The problem is I can't find a firmware that doesn't get rejected. With Lollipop firmwares, it starts to install, but it fails at 12%. With Marshmallow ones, the installation process doesn't even start.
What can I do to make it work again? I'm very sad because this phone was gifted to me a couple of days ago and I already messed it up. I don't even know how to turn it off.
What can I do to get in fastboot mode? At that point, what should I do to flash the stock firmware? Or maybe do I need to find the first stock firmware ever installed into this phone to make the forced update work?
Please, I need help. Thank you in advance!
P.S. The phone's model is ALE-L21. I live in Italy, so I assume it's a European version.
Did you managed to fix this?
Jhon_Locke said:
Did you managed to fix this?
Click to expand...
Click to collapse
Not yet, but I'm working on it. I found out that the device is recognized by my PC if I follow these steps:
1. Connect the phone to the PC and wait for it to go in rescue mode;
2. Wait until the notification LED stops to blink;
3. Disconnect the USB cable;
4. Press volume - and power button;
5. Reconnect the cable.
At that point, the screen turns black and the phone is recognized as "㄰㌲㔴㜶㤸". I installed the drivers and now it's recognized as "HUAWEI USB COM 1.0". I should be able to reflash the partitions and make my phone work again, but I'm still trying to understand how to do it correctly.
Any help is appreciated!
ErikChimello said:
Not yet, but I'm working on it. I found out that the device is recognized by my PC if I follow these steps:
1. Connect the phone to the PC and wait for it to go in rescue mode;
2. Wait until the notification LED stops to blink;
3. Disconnect the USB cable;
4. Press volume - and power button;
5. Reconnect the cable.
At that point, the screen turns black and the phone is recognized as "㄰㌲㔴㜶㤸". I installed the drivers and now it's recognized as "HUAWEI USB COM 1.0". I should be able to reflash the partitions and make my phone work again, but I'm still trying to understand how to do it correctly.
Any help is appreciated!
Click to expand...
Click to collapse
fastboot detects your device when you plug it into your computer?
I mean, if you run "fastboot devices" it shows your phone?
I've had this same problem but with an P8 Lite 2017, after flashing some ROM that supposedly was the stock one and trying to flash recovery I ended up with my phone bootlooping into rescue mode, I was able to "bypass" this thing rebooting my phone like crazy, seriously like after 20 reboot it finally booted into the damn ROM and I never touched the phone again. Sometimes when the phone ran out of battery and tried to power it on the phone booted into rescue mode and again after some reboots it booted to Android but now I want to install a custom ROM or at the very least root this damn phone so that's why I'm asking you if you have solved this, if you do then probably if I follow the same steps I would be able to fix that screen, hopefully.
If you are able to flash something start with flashing all recoveries your update.app has, maybe that's the problem (at least in my phone it is).
Jhon_Locke said:
fastboot detects your device when you plug it into your computer?
I mean, if you run "fastboot devices" it shows your phone?
I've had this same problem but with an P8 Lite 2017, after flashing some ROM that supposedly was the stock one and trying to flash recovery I ended up with my phone bootlooping into rescue mode, I was able to "bypass" this thing rebooting my phone like crazy, seriously like after 20 reboot it finally booted into the damn ROM and I never touched the phone again. Sometimes when the phone ran out of battery and tried to power it on the phone booted into rescue mode and again after some reboots it booted to Android but now I want to install a custom ROM or at the very least root this damn phone so that's why I'm asking you if you have solved this, if you do then probably if I follow the same steps I would be able to fix that screen, hopefully.
If you are able to flash something start with flashing all recoveries your update.app has, maybe that's the problem (at least in my phone it is).
Click to expand...
Click to collapse
No, it doesn't show anything if I write that command...
I guess mine won't ever boot into the rom because it seems like there's no system installed. I made some researches and found out there are some softwares that let you reflash the partitions IF the phone is recognized as "HUAWEI USB COM 1.0". I'm still trying to figure out how to do it correctly though. I feel like if I do something wrong, then my phone won't probably turn on again.
In your case, you should be able to flash a custom rom without any issue. You just have to be very careful and inform you as much as you can: I don't want your phone to end up like mine?. Anyway, it seems pretty hard to go back to the stock rom, so think about it before you flash a custom rom. Also, make a Nandroid Backup is very important.

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