Alright so this has happened
I was all a happy guy on H915_10e rooted rom on my H910PR when I decided to my destruction, flash Lineage 15.1 with second screen support as well as trying out gamma kernel for second screen. Turned out xda's dl server crapped on me by refusing to letting me download the SS gamma kernel for LOS 15.1
I ended up flashing x86cpu's LOS15.1 and then after a day I only observed phone lasting me 6-8 hrs due to the greyed out NFC and no option to get the problem sorted out (seemingly I am the only one having this issue).
So all I had to do was flash stock kdz again and start from zero to dirtysanta H915 rom
I have sold my PC and thus am left with two laptops (both have USB 2.0 as well as USB 3.0 ports).
I first installed LG drivers WHQL v4.2.0
Then I installed LG UP v1.14.3
Then I extracted the patched LGUP in correct folder (double checked)
I put my phone to download mode and connected > it gets recognized in device manager.
Now when I try to run LGUP, it says unknown in device model and shows me H915_10e (surprisingly enough its running on lineage 15.1 H910 with gamma kernel). It doens't let me proceed further. Even after using uppercut
I tried the guide to unbrick in LG G5 forum which basically follows LG Flash tool route which failed for me too.
After that I looked if I could get to TWRP and yes I could, as well as the engineering boot is still there (fastboot commands work).
Now that I do have full flashable image of H910_10r from brian's guide to root, when I try to reboot after flashing TWRP gives me an error that no OS is installed and I get stuck at LG Logo (not even the warning screen).
I tried flashing Super V20 rom as well and ended up in the same den. I havent tried to flash LOS back but that's of no use to me (battery nightmares).
Whats the valid route here to get back to my H915 or H910PR rom ? LGUP isn't working for me despite being patched
-Thanks
Put that h910_10r zip along with Magisk onto an SD card. In TWRP, wipe everything / format data, then put the SD card into the phone, and flash that zip. Once flashed, flash Magisk.
Before you reboot, make sure that data and system are mounted, unmount them (uncheck them), and then mount them again.
-- Brian
runningnak3d said:
Put that h910_10r zip along with Magisk onto an SD card. In TWRP, wipe everything / format data, then put the SD card into the phone, and flash that zip. Once flashed, flash Magisk.
Before you reboot, make sure that data and system are mounted, unmount them (uncheck them), and then mount them again.
-- Brian
Click to expand...
Click to collapse
Did so, before rebooting TWRP asked me that there is no OS installed.
Surprisingly after every flash process I checked in download mode if there is any sign of identification.
I ended up flashing full stock H910 10q through TWRP, still the phone said there is no OS installed. The same error popped up when I flashed super v20 full stock H910 too.....
welp, now I'm with locked bootloader with Firmware update screen showing me "633A B50" in the information and stuck at 0%
LGUP still identifies as unknown device. Looks like I've ended up in the same basket as some of the fellows who got stuck with disfunctional download mode. I'll try tomorrow if I get to buy another Type-C cable although phone identifies correctly even in LG Flash tool (the identifier worked as H915 before, then changed to H910PR when I tried the H910PR kdz on provision of LGUPc.dll from extracting the kdzs.
I can't do anything except charge phone and if I try to power it on, its stuck on LG Logo (no warning screen whatsoever and there is no going back to TWRP as of now.
I even tried kdzwriter and it just remaining blank on the kdzwriter commands despite I could see kdzwriter in sbin directory and manually setting permissions to 755 through twrp file manager, still it did nothing.
Also, the bloody funny thing is, LGUP still recognizes as H91510e while LG Flash Tool recognizes phone as H91010q as well as shows LG-H910 on the phone firmware update status log. Something from full stock H91010q didn't erase that info as well
Wait, how do you know you still had the engineering bootloader other than the fact that you could boot to TWRP?
If you had no warning screen, then you probably didn't.
You may have bricked your phone, but we may be able to learn something.
Edit: FYI .. you still may not have bricked your phone yet if you still have download mode.
EDIT2: If you want to save your phone, don't do anything else for now.... read the laf development thread, not the lafsploit thread....
-- Brian
runningnak3d said:
Wait, how do you know you still had the engineering bootloader other than the fact that you could boot to TWRP?
If you had no warning screen, then you probably didn't.
You may have bricked your phone, but we may be able to learn something.
Edit: FYI .. you still may not have bricked your phone yet if you still have download mode.
EDIT2: If you want to save your phone, don't do anything else for now.... read the laf development thread, not the lafsploit thread....
-- Brian
Click to expand...
Click to collapse
When I had engg bootloader (which facilitated all fastboot commands we need to flash modem recovery blahblah etc) and TWRP, the phone sat on LG Logo all the time if I did a normal bootup or reboot through recovery.
The warning screen only poppped when I used the enter recovery combo.
Also H910_10m has something different than H910_10r.
The warning screen on 10r is perfectly crisp and clear but the warning screen on H910_10m firmware is distorted all accross the screen with parts of it horizontally distributed all over and wrapped around.
Rigth now:
I have working download mode and only way the phone talks a little bit (mamma papa of a baby maybe) is through LG Flash tool when I give the LGUP.dll and a kdz to flash to it. It says its an LG-H910 on download mode status screen and says two lines about H91010r and the next line as the line of the firmware I'm trying to flash, here in my case those are H91510e and H910PR10j.
I can even go to factory reset screen and the nice circle spins saying to me erasing but it reboots back at LG Logo
I have full dump of my H910PR but that's useless if LGUP doesn't recognize my phone.
TLDR as of Now: I'm going to install Windwos 7 on my older Lenovo x230 Laptop and start from scratch. I believe there is a bad driver footprint left somewhere in this windows 10 and I hate windows 10's communication trouble with third party devices.
Will keep you updated via this thread. I hope I do not annoy you too much with my post backs
Bump! No chance. Stuck in same situation but now I have only access to download mode or factory reset (since I'm on stock H910 10q firmware). LGUP says unknown with H91510e while LG flash tool says it's H91010q. Can't flash sh**.... I've ordered a replacement H910 motherboard and it's gonna arrive in 15 days give or take. Will see if I can swap connection Midway in LGUP and flash this one to stock H910PR
Related
Greetings. I have a lg v20 us996 and the problem is this. After flashing it with lgup UPPERCUT_1.0.0.0, now the phone reboots into fastboot mode. I have given factory reset and I have flashed another filmware of the same model and still the same. I turn it off by removing the battery and when I connect it to the computer or the home charger, it lights up in fastboot mode. any solution. Thank you
When that happened to me I had to send it in for factory warranty repair. Their diagnosis was faulty ram. Phone came back unrooted and I really don't know if I should try to reinstall TWRP and root. I get the message that the phone cannot be checked... when I boot up, which leads me to believe the bootloader is still unlocked. I miss TWRP and root REAL BAD so will probably give it a try but am not brimming with confidence.
PhoneBill said:
When that happened to me I had to send it in for factory warranty repair. Their diagnosis was faulty ram. Phone came back unrooted and I really don't know if I should try to reinstall TWRP and root. I get the message that the phone cannot be checked... when I boot up, which leads me to believe the bootloader is still unlocked. I miss TWRP and root REAL BAD so will probably give it a try but am not brimming with confidence.
Click to expand...
Click to collapse
Greetings. In my case it was not root and no installation of twrp. It was after flashing of the filmware that I left in fastboot mode. Now does not boot and gets stuck in fastboot mode
This happened to me when trying to update my old LG K10 through LG Bridge and it failed. After it installed the update properly, it booted normally. I think it's a flag that LGUP or UPPERCUT fails to reset, so the phone thinks it's still waiting to install the update through LG Bridge's Update Error Recovery.
might be of use here
i had a h910 flashed over to us996 that was stuck in fastboot. i had tried everything from flashing all the us996 firmwares to frp reset and came up with nothing. i then flashed H91510c_00_VTR_CA_OP_1007.kdz it not only successfully flashed but got me out of fastboot mode. i am now reflashing the us996 10f and will re root and twrp .. hope this helps someone out.
cbilberry said:
might be of use here
i had a h910 flashed over to us996 that was stuck in fastboot. i had tried everything from flashing all the us996 firmwares to frp reset and came up with nothing. i then flashed H91510c_00_VTR_CA_OP_1007.kdz it not only successfully flashed but got me out of fastboot mode. i am now reflashing the us996 10f and will re root and twrp .. hope this helps someone out.
Click to expand...
Click to collapse
You just saved my xmas!
I think the reason it works is because the partition layout is redone because the partition layout is different. So it has to be re-written which is what needed to be done to fix the issue. The Korean F800 version has a different partition layout as well so that prolly would work too, which I actually had before I downloaded the H915.
This also fixed the issue I was having in the first place that made me chip erase which didn't work. But now I know what's going on, writing a fresh partition table can solve many issues which doesn't happen when crossflashing variants that have the same partition layout.
Hello,
I'll try to detail as much as I can to explain how i ended up Bootlooping :
I tried today to root my LG H870. (imported from Germany, according to the seller).
I followed the tutorial on xda to unlock the Bootloader on the device.
After flashing it, it launched Android the 1st time without difficulties.
I rebooted into TWRP, flashed supersu, then rebooted into Android. Problems started there, the system told me my partition was encrypted, and asked if i wanted to reinitialize it. After doing so, it's been stuck, bootlooping to TWRP, the internal partition empty.
I followed numerous tutorial on how to flash a stock ROM through TWRP, Fastboot, ADB Sideload, without any success.
With TWRP, it was always ending up saying the flash wasdone, without writing a single file in the partition.
I also tried installing stock ROM with LGUP, but once again, didn't seem to work. While in download mode, it was either telling me the phone was an unknown model, on port COM3, or that there was no handset connected.
I then followed another guide, using LG Firmware Extract and LG Flash Tool. It didn't work as expected, but, I don't really know how, it made LGUP seeing my phone correctly. I was then able to flash a stock ROM (H87010f). No error during the process.
After the LG Logo, i get now a blue screen, saying for some seconds "Encryption Progress", and after that "Factory Reset Status", with a big red "2", and it gets stucks there.
Once again, if I get into download mode and into LGUP, i get now the "no handset connected" message.
Is someone on here able to help me?
If more infos are needed, tell me, i'll try to answer!
Thank you all!
Hey everyone!
While trying to update LineageOS on my G6 I somewhat messed up and now am out of ideas. I tried to install an OTA update, which sent me into a TWRP-bootloop. I tried to fix this by using the dd-commands described here before seeing the next post, which advised against it and recommended a different one. Unfortunately too late. I did back up both partitions on my external SD card, though.
Since then the phone is in a boot loop continuously displaying this screen (the author of this thread seemed to have a similar problem - but it wasn't resolved there). I can get into fastboot and download mode with the volume buttons. Getting into the reset-menu and trying to open TWRP from there doesn't work, it just goes back to boot-looping.
Do you have any ideas how to recover from this situation? Ideally without a factory reset... although I have most of my data backed up the storage is encrypted and It would be awesome to recover into the old system. I still have a little hope left that I haven't messed up quite that bad. :/
Thank you!
your data is lost because you can not do anything anymore
make full wipe with fastboot because LGUP currently update supports
fastboot format userdata
fastboot format cache
fastboot format system
go into download mode and flash stock with uppercut and LGUP do you get errors check drivers or take another stock rom. !!! you can not flash a US Stock rom to a EU Model (this was an example !) !!! watching exact your model [H870/H872/US997] and rom
For me it has worked successfully H870 with 20c open EU
Hello.
I got V20 F800L "rooted" with Lineageos. I wanted to restore the factory system. I downloaded the .kdz file and LGUP and LGFirmwareextract program and started flashing.
During the final phase of flashing, the smartphone resets, then less than a second I see a circle with the word "erasing", then a moment animated LG logo, then the static logo LGU+ and locks here.
Windows drivers and LGUP still recognize the device, I can flash different versions of f800l, I tried 10e and 20k and the program communicates that the flash was successful but nothing changes, the system does not boot.
I can enter the "power + vol + down" mode to do "factory data reset", after that appears for less than a second a circle with the word "erasing" , then logo "LG U +" logo and locks in place.
How to recover the device, please help.
Use LGUP patched, restore device with DL Mode option and select all partitions. When device rebooting, disconnect and reconnect the battery then do the factory reset. Your device will be fully restored to stock
khtr98 said:
....then do the factory reset. Your device will be fully restored to stock
Click to expand...
Click to collapse
Thank you for your response.
I tried to use the version with the LGUP patch.
I chose the PARTITION DL option and selected all partitions. While the LGUP program reset the device, I pulled out and inserted the battery, after the reset the program confirmed the success, but the device still can not start, and then all I have is the LGU + logo.
Did I do something wrong? do you have any other ideas?
I have no idea, maybe some partition is corrupted and cannot be restored.
But you can try this tricky way (if you have no choice)
Download us996 10f kdz, use PARTITION DL with all selected partition to crossflash your device to us996. LGUP will show a dialog box tell you want to repartition some partition layout. Click yes then wait to finish and hopefully it boots fine.
khtr98 said:
I have no idea..
Click to expand...
Click to collapse
I tried with different versions of ROM. Finally it boot. At the beginning I flashed with versions 10e (Android 7) and 20k (Android 8) with PARTITION DL mode, but it did not boot, but finally I was flashing the latest version 30e (Android 9) for F800L and the system started
Thank You khtr98. Problem solved
khtr98 said:
I have no idea, maybe some partition is corrupted and cannot be restored.
Click to expand...
Click to collapse
But option to enter the download mode (via usb+volume-up) has disappeared. I lost possibility for downgrade and root when I choose android 9 for f800l ?
after upgrade (official android 9 for f800L), when i try to go back to oreo or nougat i used a patched LGUP i get the message:
Error 0x ....., plaease use last DLL
LAF Protocol Version is not match DLL = 10 .......
Device = 14 ....
is downgrade possible?
ok. is possible
==================================================
For educational purposes, I again downgraded the version from the rooted line 17 to the factory Android 7.
This time it went smoothly because I did advanced cleaning in TWRP before.
I used the wrong version of the patched LGUP, this version is correct, it allows downgrade: https://forum.xda-developers.com/android/general/tecknights-aristo-2-tutorials-t3805141/page3
I was attempting to unlock my boot loader and flash a custom ROM, I was following a guide on YouTube specifically for this phone, and he was using US99610 firmware instead of Verizon firmware (to prevent uncontrolled vibration during 1st boot) I messed up the process and couldn't get back to TWRP, so I used his patched LGup tool to attempt to flash stock firmware back, because I could no longer use my phone's screen without connecting to HDMI and using a mouse and keyboard. I flashed it back to stock and everything seemed normal, until it didn't boot at all. I then tried to reflash the US996 firmware and LGup stopped at 4% with an error: SPC code does not match, please try again. Any ideas how I can unbrick it? If I connect it in download mode the tool still sees my phone fine, with the US99610 firmware on it. I can post pictures and a link to the YouTube video for further clarification. I've tried using patched LGup and partition dl to flash back, that's what throws the SPC code error. Any help would be appreciated
jamesbond2285 said:
I was attempting to unlock my boot loader and flash a custom ROM, I was following a guide on YouTube specifically for this phone, and he was using US99610 firmware instead of Verizon firmware (to prevent uncontrolled vibration during 1st boot) I messed up the process and couldn't get back to TWRP, so I used his patched LGup tool to attempt to flash stock firmware back, because I could no longer use my phone's screen without connecting to HDMI and using a mouse and keyboard. I flashed it back to stock and everything seemed normal, until it didn't boot at all. I then tried to reflash the US996 firmware and LGup stopped at 4% with an error: SPC code does not match, please try again. Any ideas how I can unbrick it? If I connect it in download mode the tool still sees my phone fine, with the US99610 firmware on it. I can post pictures and a link to the YouTube video for further clarification. I've tried using patched LGup and partition dl to flash back, that's what throws the SPC code error. Any help would be appreciated
Click to expand...
Click to collapse
Use UPPERCUT