Unable to flash any custom rrom - LG Optimus L9 P760, P765, P768, P769
I'll give you a little pre-story.
Short version:
I have CWM recovery on android 4.12 but when I try to flash either PACman Rom or CM It gives me assert: failed getprop error. After removing the first line of the updater script in the zipfile I don't get the assert error, it just states
Finding update package...
Opening update package...
Installing update...
Installation Aborted.
Long version:
Initialy I was running Android 4.04 (ICS) with CWM recovery. I decided to flash the PACman rom(http://forum.xda-developers.com/showthread.php?t=2388267). I did the following.
1. Rebooted into CWM recovery.
2. Did a factory reset.
3 Wiped Dalvik cache.
4. Flashed ROM
5 Flashed Kernel
After completing these steps I rebooted my phone to find a "Security Error" message under the LG logo. It would automaticlly shutdown after 20 seconds. So what I initially tried was to flash the 10G KDZ which didn't work out because the LG tool is ****. However the 20B KDZ did work (which is Android 4.1.2). After the flashing had completed my phone booted normally. I was able to root my phone using this guide http://forum.xda-developers.com/showthread.php?t=2173465. I was also able to install CWM recovery. Now the following problem is this when I want to flash the PACman rom or the CM ROM I get the following error assert failed: getprop("ro.product.device") == p760 || getprop ("ro.build.product") == "p760" E:error in (path to zipfile) (status 7) Installation aborted. I got around that by removing the first line of the of the updater script. I don't get the error but it just states "Installation aborted".
Thanks in advance.
BausDroid said:
I'll give you a little pre-story.
Short version:
I have CWM recovery on android 4.12 but when I try to flash either PACman Rom or CM It gives me assert: failed getprop error. After removing the first line of the updater script in the zipfile I don't get the assert error, it just states
Finding update package...
Opening update package...
Installing update...
Installation Aborted.
Long version:
Initialy I was running Android 4.04 (ICS) with CWM recovery. I decided to flash the PACman rom(http://forum.xda-developers.com/showthread.php?t=2388267). I did the following.
1. Rebooted into CWM recovery.
2. Did a factory reset.
3 Wiped Dalvik cache.
4. Flashed ROM
5 Flashed Kernel
After completing these steps I rebooted my phone to find a "Security Error" message under the LG logo. It would automaticlly shutdown after 20 seconds. So what I initially tried was to flash the 10G KDZ which didn't work out because the LG tool is ****. However the 20B KDZ did work (which is Android 4.1.2). After the flashing had completed my phone booted normally. I was able to root my phone using this guide http://forum.xda-developers.com/showthread.php?t=2173465. I was also able to install CWM recovery. Now the following problem is this when I want to flash the PACman rom or the CM ROM I get the following error assert failed: getprop("ro.product.device") == p760 || getprop ("ro.build.product") == "p760" E:error in (path to zipfile) (status 7) Installation aborted. I got around that by removing the first line of the of the updater script. I don't get the error but it just states "Installation aborted".
Thanks in advance.
Click to expand...
Click to collapse
Is your phone booloader unlock? You must unlock your phone boot loader before flash any custom rom.
artit said:
Is your phone booloader unlock? You must unlock your phone boot loader before flash any custom rom.
Click to expand...
Click to collapse
Well I assume since I have CWM Recovery that my phone's bootloader is unlocked. Correct me if I'm wrong.
BausDroid said:
Well I assume since I have CWM Recovery that my phone's bootloader is unlocked. Correct me if I'm wrong.
Click to expand...
Click to collapse
No. Please look for how to unlock bootloader in L9 General & Q&A forum, and select thread that match your phone model.
artit said:
No. Please look for how to unlock bootloader in L9 General & Q&A forum, and select thread that match your phone model.
Click to expand...
Click to collapse
Turns out bootloader was locked. I have followed the guide and unlocked it but the same problem still occurs. [Did factory reset , cache wipe , dalvik cache wipe.
Thanks for your input
BausDroid said:
Turns out bootloader was locked. I have followed the guide and unlocked it but the same problem still occurs. [Did factory reset , cache wipe , dalvik cache wipe.
Thanks for your input
Click to expand...
Click to collapse
If your phone bootloader is unlocked and you also remove assert model check line from installer, you shouldn't get that error status 7.
Please try to make sure that your phone bootloader is unlocked by boot your phone in S/W update mode. The bootloader unlock text will print at the top of that screen.
artit said:
If your phone bootloader is unlocked and you also remove assert model check line from installer, you shouldn't get that error status 7.
Please try to make sure that your phone bootloader is unlocked by boot your phone in S/W update mode. The bootloader unlock text will print at the top of that screen.
Click to expand...
Click to collapse
I can confirm that it is unlocked. The text in the upperleft corner reads "Bootloader Status: Unlocked".
BausDroid said:
I can confirm that it is unlocked. The text in the upperleft corner reads "Bootloader Status: Unlocked".
Click to expand...
Click to collapse
If you still unable to flash any custom rom please try to flash stock kdz or use LG mobile support tool to recover your phone. Once my phone is in strange condition, I can flash custom rom but I cannot boot it (My bad, I use wrong update script when I test my rom). My phone always stuck at LG logo. Flash kdz, restore CWM and flash rom don't help. The last thing that make my phone boot up again is LG mobile support tool.
BTW if you phone model is not P760 you should restore your old baseband by flash you original kdz. (You flash P760 to unlock your boot loader right?)
artit said:
If you still unable to flash any custom rom please try to flash stock kdz or use LG mobile support tool to recover your phone. Once my phone is in strange condition, I can flash custom rom but I cannot boot it (My bad, I use wrong update script when I test my rom). My phone always stuck at LG logo. Flash kdz, restore CWM and flash rom don't help. The last thing that make my phone boot up again is LG mobile support tool.
BTW if you phone model is not P760 you should restore your old baseband by flash you original kdz. (You flash P760 to unlock your boot loader right?)
Click to expand...
Click to collapse
Well the problem is that I can't flash the stock 10G KDZ because the LG Mobile Support Tool only allows me to install 20B KDZ. Your question could be interpreted in two ways so I will give you two awnsers .
Q Why did I flash my p760?
A Because after flashing PACman rom on android 4.0.4 I got a security error
Q How did I unlock my bootloader?
A I first rooted the device. Installed CWM recovery, then did adb reboot oem-unlock
So the question is how do I flash 4.0.4 KDZ if the LG mobile support tool does not allow me?. Or how do I resolve the ROM installation issues?.
Thanks again
BausDroid said:
Well the problem is that I can't flash the stock 10G KDZ because the LG Mobile Support Tool only allows me to install 20B KDZ. Your question could be interpreted in two ways so I will give you two awnsers .
Q Why did I flash my p760?
A Because after flashing PACman rom on android 4.0.4 I got a security error
Q How did I unlock my bootloader?
A I first rooted the device. Installed CWM recovery, then did adb reboot oem-unlock
So the question is how do I flash 4.0.4 KDZ if the LG mobile support tool does not allow me?. Or how do I resolve the ROM installation issues?.
Thanks again
Click to expand...
Click to collapse
For flashing ICS
In JB rom offline flash program cannot detect your phone in S/W update mode. Most people stuck at about 15% and the program told them that their phone is not connect. If you want to flash 4.0.4 ICS kdz you should
- boot your phone up (if it can boot up),
- connect usb cable and put your phone in LG software mode.
- Do an offline flash again but select DIAG instead of EMERGENCY. You phone should reboot into S/W update mode automatically. After that it will get pass 15%.
But If you cannot boot your phone up, you need to flash you phone model ICS u-boot and x-loader via fastboot. After that offline flash program can detect your phone in S/W update mode.
For rom istallation, I'm sorry I don't understand why you cannot flash custom rom. Maybe your download is corrupt? Please check file md5 with rom uploader.
artit said:
For flashing ICS
In JB rom offline flash program cannot detect your phone in S/W update mode. Most people stuck at about 15% and the program told them that their phone is not connect. If you want to flash 4.0.4 ICS kdz you should
- boot your phone up (if it can boot up),
- connect usb cable and put your phone in LG software mode.
- Do an offline flash again but select DIAG instead of EMERGENCY. You phone should reboot into S/W update mode automatically. After that it will get pass 15%.
But If you cannot boot your phone up, you need to flash you phone model ICS u-boot and x-loader via fastboot. After that offline flash program can detect your phone in S/W update mode.
For rom istallation, I'm sorry I don't understand why you cannot flash custom rom. Maybe your download is corrupt? Please check file md5 with rom uploader.
Click to expand...
Click to collapse
I did the above but I get a page error(only with the 4.04 kdz). When my phone was bricked I had the same problem thats why I flashed 20B. Thanks for your time.
Related
[TUTORIAL][D802] Root, install recovery and update bootloader for NEWBIES/NOOBS!
Hello, Many people have problem with bricked device because they complied many diffrent tutorials and broke their G2. I will explain you how to root stock rom/update bootloader and back to stock via lg flashtool. Perform operations step by step Okay, so first thing - ROOT STOCK LG ROM. 1. Stump ROOT (Without usb cable, working with 20h ROM) Stump Root v1.2 (Newest version) -->> Download Stump ROOT v1.2 <<-- Go to settings>general>security and check "Unknown Sources" to install external APKs. Now install Stump ROOT app from download link. (In installation progress Android will ask you for install permisions because this integrate in system code. OFC ACCEPT) Open Stump ROOT and press GRIND, then wait sec and press BruteForce, after 1-2 min your device will restart and now u got ROOT, u need install -->> SuperSU <<-- from market. 2. Install TWRP for your device. (Autorec) -->> Download AUTOREC <<-- Okay, it's easiest step, just install Autorec application (Be sure it's for your model in file name!) Open, accept and flash. This way will downgrade your bootloader and kernel. After device reboot u have already ROOT and TWRP. Now u can update first your TWRP to newest 2.8.5.1 -->> HERE THEARD WITH NEW TWRP <<-- If you download new TWRP, then u can easy flash it via -->> Flashify <<-- app from market. There select recovery>zip and select your new TWRP, it will reboot device to recovery and flash. (BE SURE IT'S FOR YOUR D802 MODEL!!) 3. Update bootloader. (IMPORTANT!!! U ALWAYS NEED UPDATE BOOTLOADER WITH VERSION ROM WHAT YOU ALREADY HAVE, IF YOUR ROM V20H, USE 20H BOOTLOADER, IF YOU HAVE 20D, THEN USE 20D BOOTLOADER OR UPDATE YOUR DEVICE TO 20H!!) Now u need becareful, because it is easy way to brick device if you will not perform tutorial. -->> Download v20h bootloader <<-- Download bootloader to your memory storage in device, and open flashify, press Menu button and Reboot Recovery, when it will reboot to TWRP, press INSTALL and select bootloader v20h zip file in path you downloaded it. Now reboot device and Enjoy ROOTED device with newest bumped TWRP and newest bootloader.. AND NO BRICK ) Enjoy your powerfull device. I will update theard with new steps like install kernels, back to stock step by step, easiest way to secure your device. I know there are many tutorials, but we have still many people on XDA with problems like QS_BULK device, 9008, secure verify problem etc etc. So this is way to bypass every danger things. Im not creator of any used in this tutorial mods, i just complied few theards to few easy steps Credits: Dorimanx Cloudyfa blastagator jcase Codefire Team
Hi good Job! I have Two questions. Can i upgrade my twrp Version with flashing the zip file in twrp? Which Bootloader version use cyanogenmod 12? Thank you!
A few additional info for the D802 variant: -You don't NEED to change boot loader if you're fully on stock unless: --You plan to use AOSP Lollipop --You use any JB based ROMs (they should say in their respective threads for the D802) -If you stick with the KK boot loader, only flash BUMPed flashables (they should state if they use this method) -I recommend to use Blastagator's TWRP as it has thermal protection that stock TWRP doesn't have -Only flash ROMs/any other flashables while the phone is cool -Most ROMs can use the KK modem unless stated otherwise Correct me on any misunderstood/incorrect information ---------- Post added at 10:56 AM ---------- Previous post was at 10:48 AM ---------- exxilee said: Hi good Job! I have Two questions. Can i upgrade my twrp Version with flashing the zip file in twrp? Which Bootloader version use cyanogenmod 12? Thank you! Click to expand... Click to collapse 1. You should be able to 2. You should be on the JB boot loader, we don't have the 12B one, that's for another variant
exxilee said: Hi good Job! I have Two questions. Can i upgrade my twrp Version with flashing the zip file in twrp? Which Bootloader version use cyanogenmod 12? Thank you! Click to expand... Click to collapse Yes. If you installed AutoRec and u are able to open recovery, you can flash via older twrp. It is no problem
goodguy25 said: A few additional info for the D802 variant: -You don't NEED to change boot loader if you're fully on stock unless: --You plan to use AOSP Lollipop --You use any JB based ROMs (they should say in their respective threads for the D802) -If you stick with the KK boot loader, only flash BUMPed flashables (they should state if they use this method) -I recommend to use Blastagator's TWRP as it has thermal protection that stock TWRP doesn't have -Only flash ROMs/any other flashables while the phone is cool -Most ROMs can use the KK modem unless stated otherwise Correct me on any misunderstood/incorrect information ---------- Post added at 10:56 AM ---------- Previous post was at 10:48 AM ---------- 1. You should be able to 2. You should be on the JB boot loader, we don't have the 12B one, that's for another variant Click to expand... Click to collapse I just wrote this tutorial for Stock, and it's always good to have new stuff. It's safe with bumped twrp and it shouldn't make any problem with device.
Thank you guys! So i dont need to change my Bootloader to Flash cm12? Installed twrp via autorec and im on Stock kk.
exxilee said: Thank you guys! So i dont need to change my Bootloader to Flash cm12? Installed twrp via autorec and im on Stock kk. Click to expand... Click to collapse U no need, no matter u have JB or KK bootloader if you use CM12 or other AOSP ROMs
Ganjax said: I just wrote this tutorial for Stock, and it's always good to have new stuff. It's safe with bumped twrp and it shouldn't make any problem with device. Click to expand... Click to collapse Ok, good. I liked your tutorial, pretty informative.
Hello, i'm stuck at this step : "3. Update bootloader. (IMPORTANT!!! U ALWAYS NEED UPDATE BOOTLOADER WITH VERSION ROM WHAT YOU ALREADY HAVE, IF YOUR ROM V20H, USE 20H BOOTLOADER, IF YOU HAVE 20D, THEN USE 20D BOOTLOADER OR UPDATE YOUR DEVICE TO 20H!!) Now u need becareful, because it is easy way to brick device if you will not perform tutorial. -->> Download v20h bootloader <<-- Download bootloader to your memory storage in device, and open flashify, press Menu button and Reboot Recovery, when it will reboot to TWRP, press INSTALL and select bootloader v20h zip file in path you downloaded it. " Edit : i flashed the rom without KK bootloader and it worked -> I Was on 20H. I rooted, installed twrp, updated twrp. I've flashed 20d KK bootloader and now, secure booting error I have access to download mode. What can i do do boot normally ? (i know i could probably flash a kdz but i don't really want to)
i cannot enter into the twrp by pressing the vol down + power, it just ask me whether i want to format, this means i still do not have twrp ?
coc014 said: Hello, i'm stuck at this step : "3. Update bootloader. (IMPORTANT!!! U ALWAYS NEED UPDATE BOOTLOADER WITH VERSION ROM WHAT YOU ALREADY HAVE, IF YOUR ROM V20H, USE 20H BOOTLOADER, IF YOU HAVE 20D, THEN USE 20D BOOTLOADER OR UPDATE YOUR DEVICE TO 20H!!) Now u need becareful, because it is easy way to brick device if you will not perform tutorial. -->> Download v20h bootloader <<-- Download bootloader to your memory storage in device, and open flashify, press Menu button and Reboot Recovery, when it will reboot to TWRP, press INSTALL and select bootloader v20h zip file in path you downloaded it. " Edit : i flashed the rom without KK bootloader and it worked -> I Was on 20H. I rooted, installed twrp, updated twrp. I've flashed 20d KK bootloader and now, secure booting error I have access to download mode. What can i do do boot normally ? (i know i could probably flash a kdz but i don't really want to) Click to expand... Click to collapse Well if you cant enter your recovery or system then you have to flash kdz. chris7617 said: i cannot enter into the twrp by pressing the vol down + power, it just ask me whether i want to format, this means i still do not have twrp ? Click to expand... Click to collapse You already flashed TWRP right? If so then you need to confirm it twice with the power button. It says like format data/factory reset but it will boot into the custom recovery.
please help me...i have a lg g2 d802 32gb model ..its a traded phone...when i got the phone it was running 4.4.2 kitkat the phone was rooted bt there was no suprrueser app i installed the app and then i flashed recovery with autorec now whenever i open my data or wifi and use my phone for some minutes my screen becomes unresponsive is it due to the jellybean bootloader that the autorec installed or something else please help me...
Recovery combo gone The thread seems like dead now, but maybe I get help . I flashed 20H and now there is the recovery combo, when I try pwr + volume down it simply reboots . The recovery is instaled, but I only can access it from software (that now is corrupted, so, soft brick).
Wrong combo chris7617 said: i cannot enter into the twrp by pressing the vol down + power, it just ask me whether i want to format, this means i still do not have twrp ? Click to expand... Click to collapse You're not soft bricked, it's just that key combo changes in 20H, new combo to enter recovery is vol down + power key, As lg logo appears, release keys and press vol up + vol down and you can easily access twrp
and i ran intro bootloop.. help!
I'll update theard soon to aosp/lollipop support, bootstacks explains etc. Wysłane z mojego LG-D802
Bricked G2 Mini
Hi! I've managed to brick my device (d610ar) badly, i think the device doesn't boot normally (message "Secure booting error! Cause: boot certification verify.", and i am stuck there), can't charge it with the wall charger, and the only thing that works is download mode; but flashing a kdz with LG FlashTool (the way i went back to stock a few times) says flashing and at 2% (or 3% sometimes) it says that doesn't find the device, that i have pull out the battery to reconnect my device again and when i do that it does the same thing on a loop, asking to do it again later.. the funny thing is that it appears on device manager on windows, on com port 11 for example, but the FlashTool doesn't recognize it.. so, i can't flash any kdz and doesn't boot.. i've read around here in xda to enter fastboot to fix it, but.. can this device enter fastboot? i couldn't do it, tried adb too and couldn't make the device visible.. i, before this happened, had multirom installed, rebooted to recovery and deleted secondary roms to install in primary rom cm12.1.. there started to happen strange things when rebooted normally to configure it.. after a while trying to boot found around here in xda too that i could enter twrp recovery via hardware keys to reinstall again, so got into it and installed a flashable zip to come back to stock KitKat directly, that have worked for me before.. after that rebooted and i can't do anything else than download mode.. i kinda figured that the problem must be that multirom injected the boot sector after installing the stock flashable zip, and when i did that restored the stock aboot and abootb (these, modified carefully, allowed us to unlock bootloader and flash recoveries, etc, etc.. ; by the way, many thanks to the devs that discovered it and made the guides!).. now i have read the instructions for flash via fastboot the stock boot.img and so pass the security verification, but i can't enter it.. so, what do you think that could be the next step? or is it really hard bricked and i should forget about it? i'm really hoping to recover it but i don't know what else to do.. sorry for the bad english, not my primary language thanks for reading and i am hoping to hear some suggestions!
He is not hard bricked you need to flash stock boot and reunlock bootloader if you have custom recovery still installed, but go first with the eazy way search xda about lg flash tool stuck at 2% there some guides to help you get kdz flashed
Thank you very much! numpea said: He is not hard bricked you need to flash stock boot and reunlock bootloader if you have custom recovery still installed, but go first with the eazy way search xda about lg flash tool stuck at 2% there some guides to help you get kdz flashed Click to expand... Click to collapse Thank you very much! You made me realize why wasn't working.. Because of you, i started to search threads related with the "flashtool stuck at 2%" and one of the things to look at was a txt file to see what was the problem.. there i found out that the lg FlashTool recognized my device as LGD618.. That's when i realized that i must've messed up when i flashed a lollipop flashable zip for the D618(a while ago), "converting" my cellphone on that model.. so when i connected on download mode and put the LGD610 kdz the comparison of cellphone model and binary model didn't match.. Solution was to flash LGD618 kdz, boot up normally, install towelroot, install supersu, edit a line on build.prop from persist.multisim.config=dsds to persist.multisim.config=none rebooted and that's it.. everything works perfectly now! i won't be doing stuff to it for a while probably will stay stock like that, because now i will be using an OnePlus One in a few days and the G2 mini will be used by my mother, i think.. Thanks again! You saved my device for being bricked forever
i glad i could helped you :good:
I tried installing kitkat having installed lollipop and did not work, also I tried installing lollipop and nothing. Well I think this update lollipop are adding some kind of lock to disallow downgrade or upgrade by KDZ. I try other methods, unlocking bootloader, and install a aboot.img, bricked my phone. I recommend that you do not attempt to unlock the bootloader and install any system image that is not official, or may end up with a dead device.
Nexus 5x boot loop (7.1.1/npf26f/2468883) help!
Hi, I believe my nexus 5x is "soft bricked" or in a "boot loop" (sorry newb here). The phone will restart and turn off during the boot animation. I am able to get into recovery mode and have attempted to use adb sideload to apply the latest 7.1.1 OTA zip from google's website. During that process (50% through) it said I could not update it because I needed to load a current or newer version. I realized I am on beta 7.1.1 NPF26F but am unable to locate the OTA zip for this.. I did download one online (seemed legit) but got an error E: signature verification failed, E: error 21. At this point I am a bit lost and unsure what to do.. any help would be appreciated. Mike
Is your bootloader unlocked? If so, then just install the whole system update, not just the OTA. This will get your off of the beta and onto the official update as well.
es0tericcha0s said: Is your bootloader unlocked? If so, then just install the whole system update, not just the OTA. This will get your off of the beta and onto the official update as well. Click to expand... Click to collapse I do not believe my bootloader is unlocked. I tried to go through the " fastboot oem unlock " steps today but I need to turn on USB debugging on the device (which I cannot do) to even have that option. Will I need to wait until the OTA.zip is released or is there another way ?
http://storage.googleapis.com/andro.../preview/bullhead-npf26f-factory-0e9ab286.zip
is this the factory image or the OTA?.. guessing by the size its the factory image. I am unaware how to flash this if my USB debugging is LOCKED. Please help
Help! I'm In some kind of bootloop. I can access fastboot mode, and download mode.
I have the T mobile H901 Like just about everyone else. I got it with android 6.0 and I wanted to root it. Now i didn't really know what to do, so I tried following some guides on here. I got my bootloader unlocked, but TWRP would not install, and I kept getting some "unknown command" error. So I installed this via LGUP: https://forum.xda-developers.com/tmobile-lg-v10/general/root-android-6-0-h901-t3382819 That gave me twrp, but I could no longer boot into system. From there I tried installing stock 6.0 .zip files, Installing .kdz files through LGUP, but nothing was working. So then I tried this thread: https://forum.xda-developers.com/tmobile-lg-v10/development/rom-v10h901v20estock-customized-t3360240 I installed the V10_H901_V20L_Update_P1.zip, then the V10_H901_V20J_Stock_Custom_2e_FULL-signed.zip both though TWRP 3.0, and followed the rest of the instructions until I got to: "Once in Fastboot type this command "fastboot oem unlock"" BUT my phone already WAS unlocked. So I (not really thinking) typed "fastboot oem lock" and then it said "erasing data" like it was supposed to. But after that, I can do longer get into my recovery, Boot to system, and If I don't enter fastboot OR download mode, It stays in a bootloop where it says: "boot verification fail!! - Cause : MISMATCH_SIG_LEN Please if anyone could help I would be so happy. EDIT: I should also mention that when I try and flash the stock 6.0 rom with LGUP (The "H90120e_00_0316") It gets to 9% and fails with the error: Error Code - 0x2000, TOT antirollback version is smaller than device version.
OK I fixed my phone by using LG Bridge firmware update while my phone was in download mode. The only problem is NOW I can't root. I hope someone can get a Nougat root working.
BuildMineSurvive said: OK I fixed my phone by using LG Bridge firmware update while my phone was in download mode. The only problem is NOW I can't root. I hope someone can get a Nougat root working. Click to expand... Click to collapse Working with some Korean friends on that now. No promises but early testing is progressing well. Hopefully it works for 20 & possibly 30
Stuck in download mode lg g6 with no os in bootloop with hardbrick
i think i made a mess, a serious mess... I was trying to flash the pie update for my LG G6 and i accidentally removed my os. I tryied to flash the stock rom but it gave me an error for the file system "unable to unmount /system" like if the file system was not in my phone. I tryied to flash another rom, the stock rom, it started to flash, TWRP wrote the boot img but not the file system. So I tryied to use the download mode with LG UP but LG UP had an error and now i'm stuck in the firmware update screen (the download mode" and i can't start twrp, what can i do? I need serious help pls
Ciccioboys said: i think i made a mess, a serious mess... I was trying to flash the pie update for my LG G6 and i accidentally removed my os. I tryied to flash the stock rom but it gave me an error for the file system "unable to unmount /system" like if the file system was not in my phone. I tryied to flash another rom, the stock rom, it started to flash, TWRP wrote the boot img but not the file system. So I tryied to use the download mode with LG UP but LG UP had an error and now i'm stuck in the firmware update screen (the download mode" and i can't start twrp, what can i do? I need serious help pls Click to expand... Click to collapse I know it has been almost a year but I just had the same issue. What is the exact error? I reinstalled stock with lg up after facing some issues too.