I was trying to update with LGUP application for firmware update but didn't success, so I removed the USB cable and pressed Volume down and power button to restart. But it went straight into Firmware Update and LGUP application can't find the port.
So, my phone is stucking in Firmware update screen, please help me how to restore the firmware and get out from Firmware Update screen, many thanks and greatly appreciated.
Hold the power button until you get a black screen. Download LG Mobile Support tool and the LG Drivers. Plug USB In and then hold the Power + Volume Up key. On your screen, click Upgrade Recovery. From there, you can do a factory reset through download mode of your phone.
Enter download mode and connect the phone in the PC. Download LG brige and open it. When you are inside the programe you will see a window of Software update enter here and there is an option that is for bad installation otas (to reinstall and correct errors). Use this and I think this will handle.
Another option I think is using LG Up you will see your device in download mode. Try to enter download mode and see if this works also.
Thanks both - I ran into a similar situation. I pulled down both the 11a and 14a KDZ files, and used UpperCut and LGUP to flash first the 14a and then the 11a image. Unfortunately in both cases after LGUP does its thing, I'm getting the LG logo, followed by fastboot screen.
I cannot reboot to get past it, and I cannot flash recovery (it says the boot loader is locked). I cannot flash the Unlock.bin from LG because apparently the KDZ re-enabled the software lock prohibiting bootloader unlocks.
So I'm suck with a phone that will only boot into fastboot, stock recovery or into download mode, and I cannot figure out how to get back to something functional. I've tried reflashing with LGUP - that doesn't work. And the LG Bridge "Update Error Recovery" option gives an error "Connect your mobile device to the USB Port" even though it is, and the LG USB drivers are installed.
Would appreciate any pointers someone could offer.
gewecht said:
Thanks both - I ran into a similar situation. I pulled down both the 11a and 14a KDZ files, and used UpperCut and LGUP to flash first the 14a and then the 11a image. Unfortunately in both cases after LGUP does its thing, I'm getting the LG logo, followed by fastboot screen.
I cannot reboot to get past it, and I cannot flash recovery (it says the boot loader is locked). I cannot flash the Unlock.bin from LG because apparently the KDZ re-enabled the software lock prohibiting bootloader unlocks.
So I'm suck with a phone that will only boot into fastboot, stock recovery or into download mode, and I cannot figure out how to get back to something functional. I've tried reflashing with LGUP - that doesn't work. And the LG Bridge "Update Error Recovery" option gives an error "Connect your mobile device to the USB Port" even though it is, and the LG USB drivers are installed.
Would appreciate any pointers someone could offer.
Click to expand...
Click to collapse
In older LG phones work LG Flashtool (2014)...Maybe with this you can flash KDZ firmware https://forum.xda-developers.com/showthread.php?t=2797190
gewecht said:
Thanks both - I ran into a similar situation. I pulled down both the 11a and 14a KDZ files, and used UpperCut and LGUP to flash first the 14a and then the 11a image. Unfortunately in both cases after LGUP does its thing, I'm getting the LG logo, followed by fastboot screen.
I cannot reboot to get past it, and I cannot flash recovery (it says the boot loader is locked). I cannot flash the Unlock.bin from LG because apparently the KDZ re-enabled the software lock prohibiting bootloader unlocks.
So I'm suck with a phone that will only boot into fastboot, stock recovery or into download mode, and I cannot figure out how to get back to something functional. I've tried reflashing with LGUP - that doesn't work. And the LG Bridge "Update Error Recovery" option gives an error "Connect your mobile device to the USB Port" even though it is, and the LG USB drivers are installed.
Would appreciate any pointers someone could offer.
Click to expand...
Click to collapse
I have the same issue - I was on Lineage os and flashing the OTA update caused bootloop to recovery. So I wanted to flash back to stock using LGUP and 14A. I did that before without issues.
This time though all installed fine but after reboot the phone immediately goes to fastboot, exactly as described above. I just spend several hours trying to fix it but with no results. The LG Bridge won't recognize the phone no matter what I do in Windows (tried 3 different PCs). On a Mac it will start connecting and will end up saying "you need to enable MTP connection".
From what I garther the stock rom flashed fine - the factory reset works, even shows "erasing data", the LG UP recognizes the phone as 14A (I tried 11A, 13A too - seems to install fine but goes immediately to fastboot after reboot).
The only thing I realized I did different when flashing the stock rom with LGUP was not using the original LG USB cable. But reflashing with original cable makes not difference now - still going to fastboot.
Any help would be greatly appreciated.
Have you guys been able to do the Upgrade recovery in the LG support tool? Did it work? It starts fine for me but after downloading the recovery file I always get and error, see the screenshot.
I was able to grab the kdz file and tried to flash it with LGUP but still the same thing. It seems like it flashes fine but after reboot it immediately goes to fastboot
kloubik said:
Have you guys been able to do the Upgrade recovery in the LG support tool? Did it work? It starts fine for me but after downloading the recovery file I always get and error, see the screenshot.
I was able to grab the kdz file and tried to flash it with LGUP but still the same thing. It seems like it flashes fine but after reboot it immediately goes to fastboot
Click to expand...
Click to collapse
Sadly I'm in the same boat as well. I'll pull some of their error messages I've gotten with LG Flash Tool this afternoon. I've tried 2014 and 2017. Both to no success.
I suspect it may be something with the /misc partition. Im going out on a limb, but I'm guessing that the AOSP and Lineage ROMs may touch misc. That partition may have some key identifiers for the LG tools. And the KDZ doesn't have a misc partition embedded inside it.
I was hoping the kdz file I was able to grab from the Lg Support tool would be different from regular stock rom 14a that is available around the internet but it appears to be exactly the same file (based on the file size). My original hope was that the file would support "Refurbish" option in the LGUP tool but it only works with "Upgrade".
I wonder if the "Refurbish" option would fix this and re-flashed all partitions - if only we could find a kdz file that would work with the refurbish option. So far all files I tried (11a, 13a, 14a) only support the upgrade option.
Thanks for all of your helps, I used LGUP and WondersMobile application on the computer and LGUP can not see the port. I did un-install the WondersMobile and LGUP can see the port and finally upgraded to latest firmware.
gewecht said:
Thanks both - I ran into a similar situation. I pulled down both the 11a and 14a KDZ files, and used UpperCut and LGUP to flash first the 14a and then the 11a image. Unfortunately in both cases after LGUP does its thing, I'm getting the LG logo, followed by fastboot screen.
I cannot reboot to get past it, and I cannot flash recovery (it says the boot loader is locked). I cannot flash the Unlock.bin from LG because apparently the KDZ re-enabled the software lock prohibiting bootloader unlocks.
So I'm suck with a phone that will only boot into fastboot, stock recovery or into download mode, and I cannot figure out how to get back to something functional. I've tried reflashing with LGUP - that doesn't work. And the LG Bridge "Update Error Recovery" option gives an error "Connect your mobile device to the USB Port" even though it is, and the LG USB drivers are installed.
Would appreciate any pointers someone could offer.
Click to expand...
Click to collapse
kloubik said:
I have the same issue - I was on Lineage os and flashing the OTA update caused bootloop to recovery. So I wanted to flash back to stock using LGUP and 14A. I did that before without issues.
This time though all installed fine but after reboot the phone immediately goes to fastboot, exactly as described above. I just spend several hours trying to fix it but with no results. The LG Bridge won't recognize the phone no matter what I do in Windows (tried 3 different PCs). On a Mac it will start connecting and will end up saying "you need to enable MTP connection".
From what I garther the stock rom flashed fine - the factory reset works, even shows "erasing data", the LG UP recognizes the phone as 14A (I tried 11A, 13A too - seems to install fine but goes immediately to fastboot after reboot).
The only thing I realized I did different when flashing the stock rom with LGUP was not using the original LG USB cable. But reflashing with original cable makes not difference now - still going to fastboot.
Any help would be greatly appreciated.
Click to expand...
Click to collapse
I too am having same problem. I've tried all the images from 11A to 14A, all of them flash with no errors on LGUP and every time LGUP detects the phone as having the last version flashed. Unfortunately, the phone also boots to fastboot every time. Nothing else to add to your descriptions at this time I'm afraid...
gewecht said:
Sadly I'm in the same boat as well. I'll pull some of their error messages I've gotten with LG Flash Tool this afternoon. I've tried 2014 and 2017. Both to no success.
I suspect it may be something with the /misc partition. Im going out on a limb, but I'm guessing that the AOSP and Lineage ROMs may touch misc. That partition may have some key identifiers for the LG tools. And the KDZ doesn't have a misc partition embedded inside it.
Click to expand...
Click to collapse
I am absolutely positive my problem is at least in part due to a messed up /misc partition though. @gqo actually described what I did pretty thoroughly in his thread, albeit in a G5. Post #9 has the fix but it didn't work for me.
I've also stumbled upon a menu under the Firmware Update screen that I had never seen before and cannot fin any mention to... Would any of you guys know what it is for? It reads something like:
Code:
** SELECT MENU **
** Select : Power Key(Long) **
** Move : Power Key(Short) **
-> MA-USB(WIFI) DL
POWER OFF
PHONE INFO
BACK
Okay, I figured it out. The menu, at least the first option, appears to be for Wi-Fi firmware update. I wonder what file the phone actually downloads... And if it would be able to fix our phones. The only unprotected network I had in hand was a mobile hotspot in my not-so-LTE Nexus 5, so I got as far the firmware download start but didn't risk it on such a slow and unpredictable network. On top of that my Nexus 5 has also gotten pretty good at bootlooping, that's why I got this G6 in the first place. If anyone out there has a reliable unprotected network and nerves of steel it could be interesting to see if the outcome of this update is different from the LGUP one.
How do you access this menu?
What I started working on yesterday is trying to build a image file for the Qualcomm Flash Image loader and see if I can flash the phone using this tool... But I have never used this tool before, right now it does not detect my phone - I need to work on that + see if I can correctly build the image file from kdz. I found some youtube step by step tutorials so we will see. I will post update on the progress tonight or tomorrow.
kloubik said:
How do you access this menu?
What I started working on yesterday is trying to build a image file for the Qualcomm Flash Image loader and see if I can flash the phone using this tool... But I have never used this tool before, right now it does not detect my phone - I need to work on that + see if I can correctly build the image file from kdz. I found some youtube step by step tutorials so we will see. I will post update on the progress tonight or tomorrow.
Click to expand...
Click to collapse
I'm not sure if there's a better way to do it, but I access it by removing the usb cable after I successfully get in Download Mode. Then I'm not sure if there's any specific key combo, I've been randomly pressing the power and the volume down buttons and at some point I get into that menu. In the menu though, for some reason, I think I can only select an option if I long press both the volume down and power buttons. The "POWER OFF" option has come in handy because so far is the only way I can actually turn my phone off. The "PHONE INFO" hasn't worked for me yet. The menu also reacts when you add/remove the microsd card... I wonder if it can be used for something other than a WiFi firmware upgrade. I haven't had the chance to connect the phone to a computer to see how the device is recognized, if at all.
And that image you're working on sounds like a neat idea, I wish I could help but I'm afraid I wouldn't have the skill. I may be able to test though. Anyway, Godspeed!
Unundra said:
I too am having same problem. I've tried all the images from 11A to 14A, all of them flash with no errors on LGUP and every time LGUP detects the phone as having the last version flashed. Unfortunately, the phone also boots to fastboot every time. Nothing else to add to your descriptions at this time I'm afraid...
I am absolutely positive my problem is at least in part due to a messed up /misc partition though. @gqo actually described what I did pretty thoroughly in his thread, albeit in a G5. Post #9 has the fix but it didn't work for me.
I've also stumbled upon a menu under the Firmware Update screen that I had never seen before and cannot fin any mention to... Would any of you guys know what it is for? It reads something like:
Code:
** SELECT MENU **
** Select : Power Key(Long) **
** Move : Power Key(Short) **
-> MA-USB(WIFI) DL
POWER OFF
PHONE INFO
BACK
Okay, I figured it out. The menu, at least the first option, appears to be for Wi-Fi firmware update. I wonder what file the phone actually downloads... And if it would be able to fix our phones. The only unprotected network I had in hand was a mobile hotspot in my not-so-LTE Nexus 5, so I got as far the firmware download start but didn't risk it on such a slow and unpredictable network. On top of that my Nexus 5 has also gotten pretty good at bootlooping, that's why I got this G6 in the first place. If anyone out there has a reliable unprotected network and nerves of steel it could be interesting to see if the outcome of this update is different from the LGUP one.
Click to expand...
Click to collapse
I'll play around a bit and see if I can land on this menu. At this point I'll try anything. I'm on an iPhone until I get this fixed - so I'm motivated!
I can setup an open guest network off my main wi-fi this evening and see what I can find out.
EDIT Sorry, I tried playing around here, but I couldn't figure out how to get back into the the menu you uncovered. If you could give some instructions on how to do it, I'm happy to give it a shot on my device.
I was able to access the menu today...what worked for me was at the firmware screen unplug the usb cable and then press volume down and power button three times quickly. I tried to connect to a wifi and it does not really do anything. I think it just establishes wifi connection but it does not download anything on it's own - it's waiting for another connection.
Also I got stuck with building the image file from kdz, it has no information on partitions. At this point I decided to ship to LG for a quote and will see how much they will ask for a reflash.
I got as far as selecting a network and getting some sort of a download start screen, but I interrupted it right away so I wasn't sure the download would actually go through... Apparently it does not. If this menu has some sort of flashing capabilities though, it might be worth checking how secure it is. If someone can get it to download and flash a modded file perhaps there could be a chance of flashing a custom recovery or something... I'm thinking about those guys that have an unlockable bootloader (which we ironically also have now).
Anyway, all of this goes well beyond my skill so I followed your example and submitted a repair service request to LG. It'll take quite long but shipping is free, so I figured I'd give it a try. I'm assuming this is an easy fix with the right software tools, so I hope LG doesn't overcharge for it. I'm even half hoping they'll do it under the limited warranty... If I recall correctly unlocking the bootloader doesn't immediately void all warranty, there's room to prove the bootloader was never actually unlocked. And after all LG does say that once unlocked, it cannot be undone and our phones are, in fact, running stock firmware and have a locked bootloader.
Update: My phone was received today by LG. In LG's Track Repair page, the status briefly showed as Undergoing Diagnostic but quickly moved to Repair In Progress, it's current status. Given that LG was supposed to contact me in case the repair was not covered by the limited warranty, meaning that an extra fee would've to be paid, I'm assuming the phone will be fixed (if possible, that is) free of charge. I will update you guys again soon, but if anyone out there is still struggling with this issue I'd recommend considering sending the phone to LG.
I have the exact same problem. Please keep us in the loop of what happens to your phone with LG
My phone has been received by LG for this issue on 9/26. It quickly moved through diagnostic to "repair in progress" on the first day plus showed ETA back to me in 6 business days. Ever since that it's stuck in that mode, no update or contact from LG. I check the status every day - every day it says the same - ETA 6 business days. It's been a week and half now with no update. I kind of expected it's going to take 2-3 weeks but annoyed that they say 6 days ETA and then you don't hear from anyone for almost 2 weeks with no change in status.
Update #2: The status finally moved to Shipped To Customer. I haven't been contacted by LG yet, so I guess the phone could've been shipped fixed as much as it could've been shipped as is for being unfixable. Either way, I wasn't and most likely won't be charged. FedEx hasn't got an ETA for the delivery, but I'll let you guys know as soon as I get my phone back.
Edit: Got an e-mail from LG. It reads something like:
Defect: Software failure
Payment Type: NOT APPLICABLE
Repair Results: S/W upgrade (download)
Repair Cost: $ 0.00
Warranty Status: In Warranty
Tax: $ 0.00
Total: $ 0.00
I guess I got away with it, I hope you guys do too.
Sent from my Nexus 5 using Tapatalk
Related
So I usually don't have to post for help as I've been doing this for a while and don't usually get this stuck.
Situation:
Rooted V20 H918 (T-Mo variant) with TWRP installed and working fine on v10d.
Phone got a little warm this afternoon so I rebooted figuring a process had run away or something (you know android).
Phone reboots and comes up to the Firmware Update screen. Mind you this isn't the same screen that folks often confuse as bootloader. There's no ADB/fastboot access only serial over USB.
Load up LGUP with Uppercut and grab the v10i KDZ. That runs flawlessly, finishes the upgrade and reboots.
This is where things go pants up.
When it reboots, I still get the triangle warning screen saying that the bootloader is unlocked and then it goes right back to the firmware update screen.
Things I've tried:
I've attempted to get into TWRP/recovery (Volume Down). I know I did the buttons right because it does that whole asking me if I'm sure I want to wipe my device, blah blah blah... but then after answer Yes twice... back to firmware update.
I've attempted to get into bootloader (Volume Up). Nothing... Right back to firmware update screen.
I've successfully flashed a 10i KDZ file using LGUP (In upgrade mode since refurb mode isn't supported by that kdz) both with Uppercut and extracting the LGUPc.dll file out of the KDZ archive. It successfully completes, reboots and goes right back to the Firmware Update screen. No errors, no changes, still no recovery, still no fastboot.
I've attempted flashing the full 6-point-something gig 10d TOT file in refurb mode and that dies out at about 11% with an invalid response error.
I've attempted flashing the boot partition only TOTs and in refurb mode that gets to 99% then dies with the invalid response error.
I've attempted flashing the recovery only 10d TOT in both refurb and upgrade mode and they both say "unable to determine OS version" and LGUP crashes out.
Things I haven't done:
I haven't been playing with ROMs or kernels.
I haven't been flashing random zips
I haven't been editing system files at all.
I haven't been washing, chewing, attempting to flush down the toilet or otherwise abusing my device.
Really I haven't been tinkering. I only wanted root for a couple of things (Ad Away primarily). So I'm certain I've done nothing negligent to cause this.
So I'm at a loss. LGUP completes successfully but doesn't fix anything. Halp?
UPDATE: LG Support Tool previously said it had the latest version of all software 10d, but now doesn't read the software version and lets me kick off the Upgrade Recovery Function. That appears to chooch fine but then tells me that it can't proceed because the battery is low. Checking the battery with a multi-meter shows it at 4.30v which is 100% according to spec.
So close... yet so far...
Thoughts?
Did you try that?
https://forum.xda-developers.com/v20/how-to/h918-dll-lgup-t3535988
netgar said:
Did you try that?
https://forum.xda-developers.com/v20/how-to/h918-dll-lgup-t3535988
Click to expand...
Click to collapse
Did you read my post? Did you see that I actually posted said DLL to that thread you linked me to?
Yes, I've tried it.
So after getting around the low battery warning crap, I finally got the LGMobile Support Tool to attempt to do something.
Basically I have to go to recovery update, punch in my IMEI and it chooches along. I then got it to download the latest update which looked to be the H91810i_00.kdz as I was snooping in it's hidden "phone" folder under ProgramData\LGMOBILEAX\
As soon as the download completes it deletes this folder and the downloaded kdz without ever talking to the phone (Phone's serial console output never updates). And then this screen with what looks like untranslated text (attached since I can't figure out how to properly embed an attached image.)
I see I'm going to have to start a bounty to get some help. ?
So check it out. I did learn something about the v20 which is how to get it into fastboot mode directly. Best way to do it is to turn off the device, then plug in a USB cable (connected to power or computer) and about 0.5 to 0.75 seconds later, just hit the volume down button. Boom, fastboot.
Unfortunately for my device, the only thing I'm able to do is lock or unlock the bootloader. Getvars spits this out:
Note that bootloader and baseband versions are blank.
I'm unable to erase or flash anything, I get (Remote: Unknown Command.)
So I relocked the bootloader and got a replacement from TMO. I honestly don't know if my rooting it would have caused such a catastrophic failure. But to be sure, since I need my v20 to be reliable. I think I'll refrain from tinkering until it becomes much more stable. Such as life on the bleeding unsupported edge.
tl;dr
Hey guys, The title says it all basically. So here's the actual issue. My US996 was running great. Then, a week or so ago it just randomly started getting super sluggish. Today, I turned it off and when i turned it back on, it went right into the "firmware update" screen. I pulled the battery, played it with then got it into the recovery screen. Only thing is, i was able to move up and down using the Vol down button and power button but, i couldnt actually go into anything. So i once again pulled the battery, and now it wont do anything but go back into the "firmware update" screen. after playing with it some i finally got into the Fast Boot screen. which allowed me to do nothing. I pulled the battery again and it wont do anything but go to that "firmware update" screen.
I have tried using Uppercut to flash it. But when the LGUP program does it's reboot it dumps me right back off on the same screen. Since Uppercut and the correct KDZ are not working. Is it a hardware or software issue?
Also please forgive me, I do not understand all of the Android terms. Like, I am not sure what ADB means. I am a bit tech savvy.
Try using LG Bridge. It will reset your phone to complete stock, but it should fix up your phone.
Obamaloominaty said:
Try using LG Bridge. It will reset your phone to complete stock, but it should fix up your phone.
Click to expand...
Click to collapse
I've tried that, Uppercut, pretty much everything. I think it's the dreaded bootloop issue. When I connect it to Bridge it tells me "no updates available" . Or, the update failed.
JethroFloyd said:
I've tried that, Uppercut, pretty much everything. I think it's the dreaded bootloop issue. When I connect it to Bridge it tells me "no updates available" . Or, the update failed.
Click to expand...
Click to collapse
Did you click "update error recovery"
Obamaloominaty said:
Did you click "update error recovery"
Click to expand...
Click to collapse
I did. It went through the update process on the phone. But, once again, when the phone restarted the it went right back to the "firmware update " screen. That tells me it's a hardware issue, right?
This doesn't make sense. If you had a bad NAND then the flash would fail because it wouldn't pass the hash check. If you had a bad CPU, it wouldn't be able to just load firmware update.
I am guessing that you have a corrupt misc, persist or persistent partition.
Use the patched LG UP to dump misc, persist and persistent. Then...
With the phone off, hold vol down and plug in the USB cable. That should that you to fastboot. If it does:
fastboot format misc
fastboot format persist
fastboot format persistent
Let me know what happens. If that fixes your phone, I can help you determine which partition is corrupt and help you fix it.
runningnak3d said:
This doesn't make sense. If you had a bad NAND then the flash would fail because it wouldn't pass the hash check. If you had a bad CPU, it wouldn't be able to just load firmware update.
I am guessing that you have a corrupt misc, persist or persistent partition.
Use the patched LG UP to dump misc, persist and persistent. Then...
With the phone off, hold vol down and plug in the USB cable. That should that you to fastboot. If it does:
fastboot format misc
fastboot format persist
fastboot format persistent
Let me know what happens. If that fixes your phone, I can help you determine which partition is corrupt and help you fix it.
Click to expand...
Click to collapse
I do appreciate your help. I attached a photo of what the ADB command prompt was telling me. but if for any reason you can't see it. It's telling me formatting isn't supported. Perhaps I'm using the wrong cmd
Weird.
Try erase instead of format.
runningnak3d said:
Weird.
Try erase instead of format.
Click to expand...
Click to collapse
Yeah. Everything about this situation is baffling. It just randomly started to happen.
Also, That command didnt work.
Did you unlock the bootloader with the bin file or using DirtySanta?
If it was with the bin file, you need to unlock it again. If you used DirtySanta, there is nothing that can be done. When you flashed the KDZ it replaced aboot, and now you can't fix the corrupt partition unless you can unlock it again.
I always tell people that if you have TWRP, don't ever flash the KDZ to try and fix your phone. There is nothing that it will do that you can't do if you have TWRP, and in your case you have an issue with a partition that isn't flashed by the KDZ ... and now no way to fix it.
Sorry, just reread your first post. I read recovery the first time and just assumed TWRP, but you meant the "vol down / press power" screen.
Is it possible an OTA got taken? Either way, I hate to be the bearer of bad news, but there is no fixing this except sending it to LG.
---------- Post added at 07:45 AM ---------- Previous post was at 07:38 AM ----------
Actually, send me a PM. I can send you a tool that can wipe those from download mode. You may be able to save your phone yet.
I didn't try to root the device. It did all this on its own. The device is still under warranty. I got in contact with LG about it. They sent me an RMA. All i tried to do was use Uppercut to try and fix it. Everything was stock on it when it did this. I purchased it brand new unlocked from B&H Photo. But, nonetheless thank you for your time and effort to help me.
I'm going to send out back to LG. But, i wouldn't mind getting that tool from you. I like LG devices. So i do plan on getting more.
I had the same issue. The phone was locked onto the firmware update and I could not override it. Pulling the battery and trying to re-flash the phone would not work. LG could not resolve it unless I sent the phone in for repair. ($42.00 + Shipping both ways)
This is what finally worked. Use the USB cord from your charger and connect the phone to a computer then power up the phone. This will override the firmware update and let the phone boot up normally.
Good Luck.
I gave up on this phone a while ago because of this issue. The only way i could start it up was if it was plugged in.. recently i started playing around with it again due to aosp second screen and started looking into the issue again. I forget where (it wasnt on xda) but i read that putting a little bit of water on the c type plug that goes into the phone fixes the issue. I dont know how or why someone discovered this and i first thought that it was someone joking or being malicious but i tried it and after 8 fricken months my phone can boot untehered!
I seem to have encountered quite the predicament. My VS995 doesn't boot any more. It shows the "Your device is corrupt. It cannot be trusted, and will not boot" message that it always has, but then it reboots and shows it again, and repeats that process forever. I cannot boot into TWRP or Fastboot mode, but Download mode still works. Upon entering download mode, the little box at the bottom says "633A B50 Modified" and the loading bar says 0%. I don't have a Windows computer (all my computers run some variant of Linux Mint) and have been using a Windows 7 VM in VirtualBox. Device manager and LG Flash Tool recognize the phone, but LG Flash Tool fails to flash it at 4% claiming an "RX Timeout" error no matter what I do with it, and the little box in the phone's download mode changes to say "633A B25 Modified." LGUP (with or without Uppercut) simply says "Unknown [COM41,]" followed by "You must select a known model, please."
I tried following this guide (https://forum.xda-developers.com/v20/how-to/guide-lg-v20-to-life-t3827732) and several others around the internet to no avail. Does anybody have any idea if this phone can be saved? Or is it destined to the dump?
Since you still get the "device is corrupt" message, you still have the engineering aboot, so you have full fastboot.
Download the KDZ for you phone and extract it. (Search, there are lots of good posts on extracting KDZs)
Boot to fastboot. With the phone off, hold vol DOWN and plug in the USB cable.
fastboot flash twrp.img recovery
fastboot reboot
Then use the key combo to try and get to TWRP. If you can't then you probably have a hardware problem (bad NAND).
Whatever you do, don't do anything that will overwrite aboot or you have a 0% chance of fixing your phone.
-- Brian
runningnak3d said:
<snip>
-- Brian
Click to expand...
Click to collapse
You boot into fastboot by holding volume down and plugging the phone into a computer, correct? Whenever I do that it just shows the "device is corrupt" screen and does the reboot loop. I can only ever get to download mode.
Try this no guaranty it will work start LG up on your computer plug in device then remove battery from device and then reboot your computer without killing LG up then put battery back in phone and restart LG up......see what happens.
Kiraisuki said:
You boot into fastboot by holding volume down and plugging the phone into a computer, correct? Whenever I do that it just shows the "device is corrupt" screen and does the reboot loop. I can only ever get to download mode.
Click to expand...
Click to collapse
When did this start? Did you do anything to your phone, or did you reboot it and it just started doing this?
-- Brian
runningnak3d said:
<snip>
-- Brian
Click to expand...
Click to collapse
For reference, I bought it used (but tested working) on eBay a month ago. First, the SD slot corrupted my SD card and then started saying the SD was not compatible with the phone. Then the SIM slot stopped reading the SIM, so I restored a backup I had made a couple days ago in TWRP and it didn't fix it. I tried dirty flashing the ROM, then clean flashing a few other ROMs, but nothing fixed either slot. After a little more of this flashing, I rebooted and the phone started doing this.
It sounds like with the flashing you did, you restored the stock aboot while you still had a modified recovery (TWRP) and modified boot (rooted) .. that is the reason you can only get to download mode -- since laf wasn't modified.
The RX timeout you are getting sounds like you have a marginal USB port or cable, you need to try flashing on another PC, and don't use VBox. I think you can still save your phone...
-- Brian
If your bootloader is unlocked then you can fix your phone, if not then i had the same problem, repaired it from market, I think he used some kind of box(maybe octopus) and got it fixed.
runningnak3d said:
<snip>
-- Brian
Click to expand...
Click to collapse
I installed Windows 7 onto a laptop and installed the programs on it. LG Flash Tool still failed at 4% claiming the KDZ and DZ didn't support something (I couldn't read it because the box was too small and it didn't scroll) but LGUP via Uppercut recognized the phone and flashed it! The phone booted to a screen with a big red 2 on it, then I reflashed it with the same KDZ in LGUP and it booted, but now it's bootlooping. I waited about 20 minutes and it didn't boot beyond the Verizon boot animation.
Kiraisuki said:
I installed Windows 7 onto a laptop and installed the programs on it. LG Flash Tool still failed at 4% claiming the KDZ and DZ didn't support something (I couldn't read it because the box was too small and it didn't scroll) but LGUP via Uppercut recognized the phone and flashed it! The phone booted to a screen with a big red 2 on it, then I reflashed it with the same KDZ in LGUP and it booted, but now it's bootlooping. I waited about 20 minutes and it didn't boot beyond the Verizon boot animation.
Click to expand...
Click to collapse
It sounds like you have a hardware problem with the NAND chip on your phone. That is the only thing that makes sense as to why you were able to get it to boot, but now it bootloops.
The data on the NAND is good enough for one boot, but then becomes corrupt....
-- Brian
runningnak3d said:
<snip>
-- Brian
Click to expand...
Click to collapse
Could the bad NAND have also caused the SIM and SD slots to stop functioning, or did the phone just basically disintegrate in my hands?
The firmware could have had problems, or whatever hardware failure messed up your NAND also toasted those.
-- Brian
runningnak3d said:
<snip>
-- Brian
Click to expand...
Click to collapse
Well that stinks. For the month I owned it, the LG V20 was the best phone I've owned so far. Oh well, thanks for helping me.
Same Boat
Kiraisuki said:
I seem to have encountered quite the predicament. My VS995 doesn't boot any more. It shows the "Your device is corrupt. It cannot be trusted, and will not boot" message that it always has, but then it reboots and shows it again, and repeats that process forever. I cannot boot into TWRP or Fastboot mode, but Download mode still works. Upon entering download mode, the little box at the bottom says "633A B50 Modified" and the loading bar says 0%. I don't have a Windows computer (all my computers run some variant of Linux Mint) and have been using a Windows 7 VM in VirtualBox. Device manager and LG Flash Tool recognize the phone, but LG Flash Tool fails to flash it at 4% claiming an "RX Timeout" error no matter what I do with it, and the little box in the phone's download mode changes to say "633A B25 Modified." LGUP (with or without Uppercut) simply says "Unknown [COM41,]" followed by "You must select a known model, please."
I tried following this guide (https://forum.xda-developers.com/v20/how-to/guide-lg-v20-to-life-t3827732) and several others around the internet to no avail. Does anybody have any idea if this phone can be saved? Or is it destined to the dump?
Click to expand...
Click to collapse
I was hoping there was a solution to Kiraisuki's post as I having similar symptoms with my phone.
My V20 is a US996 BPT with a locked boot-loader. Mine will crash apps, stop at 4% via LG Flash, then reboot into "Your device is corrupt. It cannot be trusted" then lock into the LG logo until I pull the battery 3 or 4 times forcing a restart. I also have the same results with LG Bridge.
Does the NAND chip itself fail or could the chip be reflowed to the board with a little precision work?
Hi,
I bought my LG G4 ages ago, it used to be my primary phone but I changed a year later. At the moment my mother has broken her own phone and has no phone during this lockdown period, I tried grabbing my LG G4 to give but remembered I rooted it and caused some sort of problem down the line.
The issue is: Whenever I try power the device on it goes straight into the "Firmware Update" screen, and inside the box says 633A B31 and "Modified" at the bottom. The device does not boot into recovery or anything else, even though I vaguely remember installing TWRP when I rooted it.
I looked up ways to fix it, but i encountered the following issues:
-When trying to flash the stock H815 Europe KDZ the LG flash tool just presents a load of question marks instead of text and refuses to work.
-When I type in "adb devices" the device simply does not show up under List of devices attached.
I am stuck, and am looking for a hand if anyone knows how to help me, or at least let me know that my device is beyond fixable. There are some signs of life from it, when I plug it into my PC it makes the windows beeping noise, that's about it. I'd just love to be able to give it to my mother because I feel bad for her during this lockdown period where she is left without a phone.
I have screenshots on my PC with all the device info: IMEI, Software version etc. If that is of any use.
Thanks in advance for any help,
Jay
You have hard-bricked your phone, maybe because you have tried to downgrade from N to MM. But don't worry, that happened to me too.
You have to unbrick your phone through QFIL: https://forum.xda-developers.com/g4/general/guide-proper-h815-unbrick-qfil-files-t3709212
Then, try again with LGUP and enjoy again your phone
I reccomend this kdz: https://lg-firmwares.com/downloads-file/15132/H81520q_00_0509
That's the latest MM kdz before Nougat. It'll work on your H815 regardless of your country.
Remember also that this is only for non-UsU devices, as the download mode is not working since you patch UsU.
crettit1204 said:
You have hard-bricked your phone, maybe because you have tried to downgrade from N to MM. But don't worry, that happened to me too.
You have to unbrick your phone through QFIL: https://forum.xda-developers.com/g4/general/guide-proper-h815-unbrick-qfil-files-t3709212
Then, try again with LGUP and enjoy again your phone
I reccomend this kdz: https://lg-firmwares.com/downloads-file/15132/H81520q_00_0509
That's the latest MM kdz before Nougat. It'll work on your H815 regardless of your country.
Remember also that this is only for non-UsU devices, as the download mode is not working since you patch UsU.
Click to expand...
Click to collapse
Thank you so much for the quick response! One thing I've just noticed is my device comes up in LGUP, but never lets me flash stock KDZ just stops at 20% with a "invalid command response error".
I visited the guide you sent, downloaded all the software and tried booting into 9008 mode. Would it be possible for you to explain this method further? My device is taken apart but I have no idea where I'm messing with on the motherboard. I've looked around but I don't understand anything.
Thanks,
Jay
You might not need to do QFIL if you weren't at v29a (the Nougat beta for our h815). LGUP will tell you in which version you are when it recognises your phone (LGH815V2XX).
Here I attach you the latest version of LGUP: https://mega.nz/#F!0wIUVIRI!zmETMswxSrEA7qjkH4rd_A
It has all the necessary stuff for the flash.
The folder which says LGUP error fix contains an dll which you have to paste in the LG program folder (C:\Program Files (x86)\LG Electronics\LGUP\model\8994\) in order to fix your problem.
Finally, ensure that you tick the REFURBISH option in LGUP.
After installing an unofficial build of Pixel Experience and having some issues with it i decided to flash my G6 back to firmware, but when tried doing it with LG UP i kept giving me Error messages about DLL's not matching each time i did it and it was weird to me cause i flashed it to firmware before with all the same files and it worked just fine, i tried LG Bridge but it won't install as it's stopping at 14%, my G6 is now on the Frimware Update screen, when i reboot it by pressing Volume Down + Power Button it shows the G6 Logo and boots straight back into Firmware Update, any ideas what im supposed to do at this point?
protectedcharms said:
After installing an unofficial build of Pixel Experience and having some issues with it i decided to flash my G6 back to firmware, but when tried doing it with LG UP i kept giving me Error messages about DLL's not matching each time i did it and it was weird to me cause i flashed it to firmware before with all the same files and it worked just fine, i tried LG Bridge but it won't install as it's stopping at 14%, my G6 is now on the Frimware Update screen, when i reboot it by pressing Volume Down + Power Button it shows the G6 Logo and boots straight back into Firmware Update, any ideas what im supposed to do at this point?
Click to expand...
Click to collapse
Have you fixed the phone ? If not I can provide you tommorow with the exact files you need to get your device working, but mainly you need for lg up the lg v40 dll so your device can be recognized and then you need a kdz file ( stock software ) that you care going to flash on your device.
AlexMihai26 said:
Have you fixed the phone ? If not I can provide you tommorow with the exact files you need to get your device working, but mainly you need for lg up the lg v40 dll so your device can be recognized and then you need a kdz file ( stock software ) that you care going to flash on your device.
Click to expand...
Click to collapse
I haven't fixed it yet, it'd be lovely if you'd be able to provide those files.
protectedcharms said:
I haven't fixed it yet, it'd be lovely if you'd be able to provide those files.
Click to expand...
Click to collapse
Get the dev patched LG UP from this post:
https://forum.xda-developers.com/showpost.php?p=76510671&postcount=168
and get the KDZ firmware specific or compatible to your phone from the lg firmwares website (just google it for the website link). You should still be able to enter download mode. Start LG UP on your PC and connect USB cable to the phone. then restart the phone by holding vol-down and power buttons, once the phone screen flickers and it starts restarting, let go of power and vol-down buttons and hold the vol-up button. You should now be back in download mode. Good luck.
Android# said:
Get the dev patched LG UP from this post:
https://forum.xda-developers.com/showpost.php?p=76510671&postcount=168
and get the KDZ firmware specific or compatible to your phone from the lg firmwares website (just google it for the website link). You should still be able to enter download mode. Start LG UP on your PC and connect USB cable to the phone. then restart the phone by holding vol-down and power buttons, once the phone screen flickers and it starts restarting, let go of power and vol-down buttons and hold the vol-up button. You should now be back in download mode. Good luck.
Click to expand...
Click to collapse
I did what you advised yet im getting a 0x2000 error and can't proceed further
protectedcharms said:
I did what you advised yet im getting a 0x2000 error and can't proceed further
Click to expand...
Click to collapse
This error is probably due to older dll, you are still using the older LG UP still installed on your computer. Remember, to use the Dev patched LG UP, you just unzip the file you downloaded and go inside the folder and doubleclick on the LGUPD.exe to start it.
If that doesn't work, need more information:
Did you uninstall all LG UP before installing Dev patched LG UP? Make sure you uninstall all LG UP from your PC and then use the Dev patched LG UP directly from the downloaded folder. Make sure you reboot the computer afterwards before trying. Try different USB cable if you have one. Try different USB port on the computer.
Make sure you are opening/using the LG UP you just downloaded. Which option did you pick in LG UP? Try Partition DL or Refurbish, both options if either works? Do not try any options that you don't know about, some options can delete everything on phone including IMEI information so don't try options such as chip erase.
What is your phone's model number and which kdz are you using? Does 0x2000 error give any more information on the popup?
If none of this works, post back here.
Android# said:
This error is probably due to older dll, you are still using the older LG UP still installed on your computer. Remember, to use the Dev patched LG UP, you just unzip the file you downloaded and go inside the folder and doubleclick on the LGUPD.exe to start it.
If that doesn't work, need more information:
Did you uninstall all LG UP before installing Dev patched LG UP? Make sure you uninstall all LG UP from your PC and then use the Dev patched LG UP directly from the downloaded folder. Make sure you reboot the computer afterwards before trying. Try different USB cable if you have one. Try different USB port on the computer.
Make sure you are opening/using the LG UP you just downloaded. Which option did you pick in LG UP? Try Partition DL or Refurbish, both options if either works? Do not try any options that you don't know about, some options can delete everything on phone including IMEI information so don't try options such as chip erase.
What is your phone's model number and which kdz are you using? Does 0x2000 error give any more information on the popup?
If none of this works, post back here.
Click to expand...
Click to collapse
I've tried the provided dev lg up on a whole different pc, and that's the error im getting so im 100% sure it's not due to an older lgup, in the error message it shows that it's some kind of dll problem and i should install a new package .msi, i've tried different cables, ports, i did Partition DL & Refurbish, got 0x2000 both times