V60 Bootloader Unlock and Magisk Root

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BESS667

Senior Member
Mar 6, 2011
124
16
Hi! I cross flashed my At&T model to EA Android 12 (Poland) and everything works except the fingerprint scanner and I also got the NT error code, any way to fix it? Thanks.
 

Xlandx

New member
Jun 28, 2022
2
0
Hi, I'm a bit confused with the steps and software I should use to cross flash my LG V60 t-mobile to Canadian version or EU version. Could someone mention the steps how to do it? Thanks
 

Bug725

Member
Jun 25, 2022
6
2
Ok, so I think I figured out the Partition Manager part but can't go any further due to an error. Please refer to the attached screenshot for reference and if possible advice what to do in regards. Thank.
Drivers is my first bet! 2nd is do u have the correct firehose? some1 handing out one that ends in ddr which is WRONG! (wasnt fun figuring that out) I linked a correct lge firehose for the lg v60 (lgv600xx). There is 2 driver pack that wont work and one will properly work w/o manual updating. So rip all drivers out if they were installed LG & QC then re-install. Suspect Win11 issue in my case.

No "Bangs" in driver manager, verify file/firehose, reboot phone back into EDL mode. Sometimes an operation or windows can shat itself. If it was working b4 just reboot phone back to edl. Sux b/c cant use adb or anything except button dance. Hope it helps!
 

BESS667

Senior Member
Mar 6, 2011
124
16
hello, can i ask for what advantages of EA version?
why people want to crossflash to it?
thank !
People who are using the AT&T variant from abroad cannot update without having an AT&T sim card and also physically being in the US, I remember reading the EA version was fully compatible to cross flash and had the least bloatware.

I now manage to make the fingerprint work by making the OCR test in the service menu with a piece of tissue (toilet paper), somehow the test passed and can now unlock my device with my fingerprint.
 
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3RR3R

Member
Jun 27, 2014
9
0
Hello, does making system RW work on android 12? i was looking at the linked page and the creater states it doesnt work on andorid 12. I tried anyway and now I have no access to internal storage only external sd card.
 

dangtoi1993

Senior Member
Feb 26, 2016
143
16
LG V60 ThinQ
People who are using the AT&T variant from abroad cannot update without having an AT&T sim card and also physically being in the US, I remember reading the EA version was fully compatible to cross flash and had the least bloatware.

I now manage to make the fingerprint work by making the OCR test in the service menu with a piece of tissue (toilet paper), somehow the test passed and can now unlock my device with my fingerprint.
yeah i destroyed my at&t before, tried crossflash and accident erase imei :D
then i swap to tmobile board, have OTA and disable all bloatware then i think no reason to cross anymore (if nothing better).
Because i realized, after system change (in my old board), i can fix fingerprint, it work again but It's not as accurate as it used to be, sometime it can not read finger to unlock then i have to go svc menu to "improve" it again.
 

BESS667

Senior Member
Mar 6, 2011
124
16
yeah i destroyed my at&t before, tried crossflash and accident erase imei :D
then i swap to tmobile board, have OTA and disable all bloatware then i think no reason to cross anymore (if nothing better).
Because i realized, after system change (in my old board), i can fix fingerprint, it work again but It's not as accurate as it used to be, sometime it can not read finger to unlock then i have to go svc menu to "improve" it again.
I managed to fix my IMEI and S/N by having a copy of the original FTM file, and modifying the FTM file after the update with a HEX editor to put your original IMEI and S/N.
 
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dangtoi1993

Senior Member
Feb 26, 2016
143
16
LG V60 ThinQ
I managed to fix my IMEI and S/N by having a copy of the original FTM file, and modifying the FTM file after the update with a HEX editor to put your original IMEI and S/N.
sound good, please make a guide for that, i have my original FTM (flash it back can fix my S/N, but no way to fix imei back).
i know alot people lost their imei and can not fix yet.
 
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KouaV1

Senior Member
Jun 22, 2015
129
14
LG V60 ThinQ
so with the system RW method, I have done it but somehow the sysrw_repair would throw an error and say file directory does not exit or should I say step 6,7,8 does not work as I get an error.

I am able to see that I have rw? i did do lg rct disable(verified through lg hidden menu) and it said I only need system rw and it worked so does that mean I have system rw? if so then what is the whole purpose of sysrw_repair?

Edit: so looks like you don't need system RW to disable LG RCT, I get thrown error 73 and no workaround but the script itself disables dm-verity and verification on the phone allowing me access to delete mnt/product/persist-lg/rct

edit#2: Looks like when running the script it when it fails it grants you temporary access to the mount/product folder until reboot and then have to run the script again.
 
Last edited:

the_R00ter

Member
May 18, 2019
49
17
Misc Fixes:

  1. Open the dialer and dial: ` *#546368#*600# ` | Verizon (V600VM): ##228378 (+ send)
  2. SVC Menu > Handprint > HandID Logging = ON | ON VERIZON SKIP THIS STEP
  3. Device Test > SAAT > Service Menu – Manual test > Optical Fingerprint test Complete the test and when a green circle shows tap it, when you see a button “pass” click it. At the end it should fail so just click the “fail” button when there is no “pass” button anymore. Start the test by clicking "start", then hold the green circle with your finger till the test finishes. On the last test it will fail so just click on "fail".
  4. Repeat 3 times and try adding a fingerprint, if fingerprint still does not work just restart and retry again.
  1. Download system systemrw_1.31d_BUNDLE.zip from https://forum.xda-developers.com/t/script-android-10-universal-mount-system-read-write-r-w.4247311/
  2. Place folder systemrw_1.31d in /data/local/tmp on the phone
  3. Place sysrw_repair_v1.31d on your linux machine
  4. Go to adb shell, su and then do "chmod +x /data/local/tmp/systemrw_1.31d/systemrw.sh"
  5. Then in adb shell do cd /data/local/tmp/systemrw_1.31d and do ./systemrw.sh size=15 or 20 and wait till its done
  6. Go to the linux machine and cd to sysrw_repair_v1.31d from step 3
  7. Connect adb with your phone and make sure to not accidentally disconnect it (This will take a while)
  8. In the sysrw_repair_v1.31d directory, do sudo ./sysrw_repair.sh and make sure your Linux machine has at least 25gb Storage space, this process will take more or less 30 mins depending on how fast the machine is
When its done it should start flashing in fastboot automatically.
Make sure to follow the guide to make /system rw or else you will end up in a non bootable system!

1. Add these lines below to your build.prop (First set permissions on the build.prop so you can write it)

Code:
Debug Options
persist.dbg.ims_volte_enable=1
persist.dbg.volte_avail_ovr=1
persist.dbg.vt_avail_ovr=1
persist.dbg.wfc_avail_ovr=1

# Radio Options
persist.radio.rat_on=combine
persist.radio.data_ltd_sys_ind=1
persist.radio.data_con_rprt=1
persist.radio.calls.on.ims=1

Make sure to set the Permissions back to chmod 600
2. Reboot, go to settings > Networks > Calls > Enable WIFI Calling
3. If it won't turn on by itself you might need to enter the Service menu and go to SVC Menu > VoWIFI > WIFI Calling Toggle = 1
Credit: Leronex (Discord), Leronex_1 (XDA)
You must make /system RW using the guide above

1. adb shell, pm uninstall -k --user 0 com.lge.rctprovider
2. adb reboot bootloader, fastboot erase rct, Reboot to System
3. adb shell, pm uninstall -k --user 0 com.lge.srtc
4. Download and install the Magisk module: https://github.com/null-dev/lg-v60-rct-disable-magisk/raw/master/lg-v60-rct-disable-magisk.zip, then reboot the phone.
5. Delete /mnt/product/persist-lg/rct folder

Done, how to check if it is disabled? "Adb shell", "su" and "getprop | grep rct". If it shows nothing as output that means the service is not running. After that check the service menu *#546368#*600# > SVC Menu > LG RCT (Has to say Disabled)
Code:
adb shell pm uninstall -k --user 0 com.lge.lgdmsclient
On TMO After 20j:
Code:
adb shell pm uninstall -k --user 0 com.lge.android.atservice
adb shell pm uninstall -k --user 0 com.lge.gdec.client
adb shell pm uninstall -k --user 0 com.lge.lgfota.permission
adb shell pm disable --user 0 com.lge.pickme
Code:
adb shell pm disable --user 0 com.lge.phonemanagement
1. Download and install QPST, when installed launch it and select the firehose and Nand type e.g. UFS.

2. Download and install this LGUP from here: https://drive.google.com/file/d/1VxecFNYK2Lr7w1HVg-mNIGEoVa8CSHFt/view?usp=sharing . In the installer select "Install LG Drivers"

3. Put phone into edl mode, here is how: Hold Vol- and pwr, when the screen turns black keep holding them and Repeatedly press vol+ You will see "Qualcomm HS-USB QDLoader 9008" under "Ports (COM & LPT)" in device manager when it is in edl. If the screen shows anything after reboot, instantly retry again.

4. When it is in EDL Mode, open partition manager and make a backup of these partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.

5. After backing up, erase the same partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.

6. Now after erasing it is sort of important to not let it boot to android, and instead boot to download mode. Here is how: force reboot with vol- and pwr button. As soon as it disconnects from windows, Release the Vol- and Power buttons and hold Vol+ to get into Download Mode.

7. When it enters Download mode, open LGUP and select partition DL. Select your favourite V60 KDZ too.

8. Click on start, then it will prompt you to select partitions that can be flashed, select every partition EXCEPT "SID_A SID_B AND ABL_A ABL_B" then confirm. (NOTE: DO NOT CLICK "SELECT ALL" IT IS BUGGED AND WILL FLASH ALL PARTITIONS, EVEN IF UNSELECTED AFTER)

9. Let it install, after that you should be done, hidden menu won't work but you can install this apk to be able to enter hidden menu and fix the fingerprint on an unlocked bootloader. https://drive.google.com/file/d/1g-7BQ_Jlmi-5tpbMg383LaiYr5YjTmqQ/view?usp=drivesdk
Can I crossflash the T-Mobile v60 to att software?
 

the_R00ter

Member
May 18, 2019
49
17
Also how would someone revert their rooted and and unlocked v60 back to stock? Just open lgup and select refurbish?
 

KouaV1

Senior Member
Jun 22, 2015
129
14
LG V60 ThinQ
Also how would someone revert their rooted and and unlocked v60 back to stock? Just open lgup and select refurbish?
If you just want to remove root then you just need to reflash back your original(current software version) boot_a and boot_b and your set as it will just unroot it. for relocking boot loader you can do the unroot method + the fastboot oem lock but that will require you to hard factory reset the divice wiping all your data.
 

stormeye25

Member
Apr 27, 2013
49
5
LG G7 ThinQ
LG V60 ThinQ
Hello, I have US Cellular v60. I'm using it with Mint (t-mobile) but Wi-fi calling and volte are nowhere to be found. Can somebody what I could do so get them unlocked? Will root + install another rom work? Thank you
 

Dewsy

Senior Member
Jan 16, 2010
126
36
dewsy.blogspot.hu
Hello everyone!

So... back in the day i cross-flashed my At&T V60 to TMO on Android 11. Worked just fine.
Now i tried to do the same, but with the Android 12 .kdz. I made a mistake and in the LGUP tool i clicked select all then deselected the 4 partitions not for rewrite. I hit the ok, then realiyed the next step was to NOT hit select all.
N
ow the phone does not load up, not even to download mode. Ican make QFIL recogize it, but i'm stuck on this point. I made the recommended backups in QFIL before the first try, but the naming of the backup files doesn't tell me witch partitons are baced up in wich .bin. What can i do at this point? Thank you for the reply!
 

dangtoi1993

Senior Member
Feb 26, 2016
143
16
LG V60 ThinQ
Hello everyone!

So... back in the day i cross-flashed my At&T V60 to TMO on Android 11. Worked just fine.
Now i tried to do the same, but with the Android 12 .kdz. I made a mistake and in the LGUP tool i clicked select all then deselected the 4 partitions not for rewrite. I hit the ok, then realiyed the next step was to NOT hit select all.
N
ow the phone does not load up, not even to download mode. Ican make QFIL recogize it, but i'm stuck on this point. I made the recommended backups in QFIL before the first try, but the naming of the backup files doesn't tell me witch partitons are baced up in wich .bin. What can i do at this point? Thank you for the reply!
follow the V60am restore thread
 
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KouaV1

Senior Member
Jun 22, 2015
129
14
LG V60 ThinQ
Hello, I have US Cellular v60. I'm using it with Mint (t-mobile) but Wi-fi calling and volte are nowhere to be found. Can somebody what I could do so get them unlocked? Will root + install another rom work? Thank you
You may have to cross flash to t-mobile, a carrier branded phone will mostly only work with wifi calling of the same carrier or network. If it is a manufacturer unlocked like the europe then it will depend on the coding that is in the phone whether it can activate it or not.
 
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dangtoi1993

Senior Member
Feb 26, 2016
143
16
LG V60 ThinQ
Thank you very much, and also, saorry for not seearching through the threads more before asking. Seems like it works! I'm now stuck on bootloop, but thats a definite step forwarf! I was able to get into download mode, so i hope i'm set up to success now!
if your unit exactly Att then this will work flawless, bootloop because you comeback from other version (you can solve bootloop by hard factory reset with button).
btw, bring download mode back and flash KDZ is bestest way to full recovery partitions of the phone.
but there is no kdz of Att version rightnow.
so only 1way to clean back to Att stock is follow that method with Qfil.
* NOTE: Be careful for keep your imei and modem partitions.
 

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  • 1
    Hello everyone!

    So... back in the day i cross-flashed my At&T V60 to TMO on Android 11. Worked just fine.
    Now i tried to do the same, but with the Android 12 .kdz. I made a mistake and in the LGUP tool i clicked select all then deselected the 4 partitions not for rewrite. I hit the ok, then realiyed the next step was to NOT hit select all.
    N
    ow the phone does not load up, not even to download mode. Ican make QFIL recogize it, but i'm stuck on this point. I made the recommended backups in QFIL before the first try, but the naming of the backup files doesn't tell me witch partitons are baced up in wich .bin. What can i do at this point? Thank you for the reply!
    follow the V60am restore thread
    1
    Hello, I have US Cellular v60. I'm using it with Mint (t-mobile) but Wi-fi calling and volte are nowhere to be found. Can somebody what I could do so get them unlocked? Will root + install another rom work? Thank you
    You may have to cross flash to t-mobile, a carrier branded phone will mostly only work with wifi calling of the same carrier or network. If it is a manufacturer unlocked like the europe then it will depend on the coding that is in the phone whether it can activate it or not.
  • 21
    Earlier today I was alerted to https://www.cnblogs.com/yanhua-tj/p/15525593.html which has the actual firehose and steps to unlock! However it seems to be in Simplified Chinese so I'll translate it here for you.

    The firehose is attached below.

    DISCLAIMER: I am not responsible for any damages this may cause as I am merely translating the guide, I am not responsible for you bricking your device because of a missed step so read carefully,

    Also, Please backup your data beforehand as this does wipe the phone. Also please note that if you are on android 11 LG Backup will not work after unlocking, neither does the LG Bridge tool.

    ***IF YOU WANT ANDROID 12, UPDATE BEFORE ROOTING, I HAVE CONFIRMED IT WORKS FINE***


    Requirements:
    1. Get QPST Here
    2. Get the FIrehose Here
    3. Engineering Bootloader Here
    4. Adb and Fastboot Here
    5. Qualcomm Drivers Here (When installing make sure to select wwan)
    6. Frp with oem unlock bit set for Verizon Here Not for demo units!
    7. Slight knowledge of the command line
    8. A Brain
    Steps:
    1. If you already have it unhidden go to Developer Options under Settings -> System and enable OEM Unlock as well as USB Debugging. If you don't see Developer Options go to Settings => System => About Phone => Software Information and tap Build Number until it either asks you for your password or says you are a developer at the bottom. Verizon Users: You will not see the oem unlock option, we will fix this later in this guide.
    2. 2) Get it into 9008 Mode: (This may take several tries)
      1. Make sure you are connected to your computer via USB.
      2. Hold Volume Down and Power until it shuts off
      3. Now here's the tricky part, as soon as the screen turns off, immediately start tapping volume up quickly, but do not let go of volume down and power, if you did it successfully you will see your screen is off but it appears either in Device Manager or Windows plays the Device Connected sound.
    3. Open and Configure QFIL as shown below:
      20211108182212.png
    4. After that click Browse and select the Firehose you downloaded earlier
      20211108173502.png
    5. Next go to the Tools menu at the top then select Partition Manager (If this errors please reboot back into edl using the steps mentioned above!)
    6. 20211108173843.png
    7. After that wait for QFIL to connect then a new window will pop up. FInd abl_a and abl_b, right click on each and click Manage Partition. First thing you want to do for each is click Read Data. This will back them up in case of anything going wrong. QFIl will tell you where it stores them. Then for each click Load Image and select the Engineering Bootloader you downloaded from before.
      20211108174205.png
      20211108174320.png
    8. Once you get that done for both abl_a and abl_b click close on both the Raw Data Manager and Partition Manager and wait for QFIL to say Finish Reset to EDL in the logs at the bottom.
    9. Now it's time to get into Fastboot.
      1. Press and Hold Power and Volume Down for 9 seconds
      2. Once you either see it disappear from QFIL or you hear it disconnect from your PC, let go of power, until you see Fastboot Mode on your Phone's screen.
      3. Open the command prompt on your computer.
    10. Once it's in fastboot verify if fastboot can see it by doing fastboot devices, if it can't see it troubleshoot here:
      1. Check your USB Connection
      2. Double check you installed the adb and fastboot stuff from earlier in the post
      3. There may be a chance WIndows doesn't recognize it properly. So follow these steps:
        1. Open Device Manager by doing Windows + X and clicking Device Manager
        2. There may be an already open row that says Unknown Devies
        3. Right click on android and select Update Drivers
        4. Select Browse my computer for drivers
        5. Select Let me pick from a list of available drivers
        6. Select Android Device
        7. Select Android Bootloader Interface
        8. Click Ok on the pop up
        9. Once that finishes double check the phone can be seen in fastboot devices
    11. Now here comes the fun part, unlocking! Please make sure you have your data backed up.
      1. If you are on verizon (and it's not a demo unit)
        1. Make sure you downloaded the file from above for the unlocked frp
        2. Do fastboot flash frp frp.img
        3. Do fastboot reboot and let it boot into android once, no need to set it up
        4. Reboot back to Fastboot using step 9
        5. Do fastboot oem unlock
        6. Select Unlock the Bootloader using volume down and power, your phone will wipe and reboot
      2. On any other variant
        1. Do fastboot oem unlock
        2. Select Unlock the Bootloader, your phone will wipe and reboot
    12. And that's it! Rooting guide will be on post 3.
    If you have any questions or feel like this is too complicated, please don't hesitate to contact us {Mod edit}
    9
    Rooting with Magisk:
    You need to have already done the unlock mentioned above
    1. Go back to the guide and go all the way to the Partition Manager part, but don't flash anything.
    2. Now find and right click boot_a, click Manage Partition Data, and click Read Data do the same for boot_b.
    3. Wait for that to finish, when it does QFIL will tell you where it stored it.
    4. Grab the file and place it somewhere as a backup.
    5. Rename it to something like boot_a.img and boot_b.img
    6. Either use an existing device with Magisk or restart your device and install the magisk app from Here (make sure to download the Magisk-v2x.x.apk)
    7. Transfer the images you got to your phone in whatever method you'd like.
    8. In the Magisk App where it says Magisk, click Install, then choose Select and Patch a File. Make sure to patch both boot images separately!
    9. Wait for that to finish, after that transfer the modified image back to wherever you want to keep it. To make it easier rename it to something like MagiskPatchedBoot_a.img and MagiskPatchedBoot_b.img
    10. Get into fastboot by Either:
      1. Shutting the phone off, and holding volume down while plugging in the usb cable
      2. Do adb reboot bootloader if you have adb debugging setup.
    11. Now in the directory of your patched image do fastboot flash boot_a MagiskPatchedBoot_a.img and fastboot flash boot_b MagiskPatchedImage_b.img
    12. Now do fastboot reboot and you're golden!
    4
    Misc Fixes:

    1. Open the dialer and dial: ` *#546368#*600# ` | Verizon (V600VM): ##228378 (+ send)
    2. SVC Menu > Handprint > HandID Logging = ON | ON VERIZON SKIP THIS STEP
    3. Device Test > SAAT > Service Menu – Manual test > Optical Fingerprint test Complete the test and when a green circle shows tap it, when you see a button “pass” click it. At the end it should fail so just click the “fail” button when there is no “pass” button anymore. Start the test by clicking "start", then hold the green circle with your finger till the test finishes. On the last test it will fail so just click on "fail".
    4. Repeat 3 times and try adding a fingerprint, if fingerprint still does not work just restart and retry again.
    1. Download system systemrw_1.31d_BUNDLE.zip from https://forum.xda-developers.com/t/script-android-10-universal-mount-system-read-write-r-w.4247311/
    2. Place folder systemrw_1.31d in /data/local/tmp on the phone
    3. Place sysrw_repair_v1.31d on your linux machine
    4. Go to adb shell, su and then do "chmod +x /data/local/tmp/systemrw_1.31d/systemrw.sh"
    5. Then in adb shell do cd /data/local/tmp/systemrw_1.31d and do ./systemrw.sh size=15 or 20 and wait till its done
    6. Go to the linux machine and cd to sysrw_repair_v1.31d from step 3
    7. Connect adb with your phone and make sure to not accidentally disconnect it (This will take a while)
    8. In the sysrw_repair_v1.31d directory, do sudo ./sysrw_repair.sh and make sure your Linux machine has at least 25gb Storage space, this process will take more or less 30 mins depending on how fast the machine is
    When its done it should start flashing in fastboot automatically.
    Make sure to follow the guide to make /system rw or else you will end up in a non bootable system!

    1. Add these lines below to your build.prop (First set permissions on the build.prop so you can write it)

    Code:
    Debug Options
    persist.dbg.ims_volte_enable=1
    persist.dbg.volte_avail_ovr=1
    persist.dbg.vt_avail_ovr=1
    persist.dbg.wfc_avail_ovr=1
    
    # Radio Options
    persist.radio.rat_on=combine
    persist.radio.data_ltd_sys_ind=1
    persist.radio.data_con_rprt=1
    persist.radio.calls.on.ims=1

    Make sure to set the Permissions back to chmod 600
    2. Reboot, go to settings > Networks > Calls > Enable WIFI Calling
    3. If it won't turn on by itself you might need to enter the Service menu and go to SVC Menu > VoWIFI > WIFI Calling Toggle = 1
    Credit: Leronex (Discord), Leronex_1 (XDA)
    You must make /system RW using the guide above

    1. adb shell, pm uninstall -k --user 0 com.lge.rctprovider
    2. adb reboot bootloader, fastboot erase rct, Reboot to System
    3. adb shell, pm uninstall -k --user 0 com.lge.srtc
    4. Download and install the Magisk module: https://github.com/null-dev/lg-v60-rct-disable-magisk/raw/master/lg-v60-rct-disable-magisk.zip, then reboot the phone.
    5. Delete /mnt/product/persist-lg/rct folder

    Done, how to check if it is disabled? "Adb shell", "su" and "getprop | grep rct". If it shows nothing as output that means the service is not running. After that check the service menu *#546368#*600# > SVC Menu > LG RCT (Has to say Disabled)
    Code:
    adb shell pm uninstall -k --user 0 com.lge.lgdmsclient
    On TMO After 20j:
    Code:
    adb shell pm uninstall -k --user 0 com.lge.android.atservice
    adb shell pm uninstall -k --user 0 com.lge.gdec.client
    adb shell pm uninstall -k --user 0 com.lge.lgfota.permission
    adb shell pm disable --user 0 com.lge.pickme
    Code:
    adb shell pm disable --user 0 com.lge.phonemanagement
    1. Download and install QPST, when installed launch it and select the firehose and Nand type e.g. UFS.

    2. Download and install this LGUP from here: https://drive.google.com/file/d/1VxecFNYK2Lr7w1HVg-mNIGEoVa8CSHFt/view?usp=sharing . In the installer select "Install LG Drivers"

    3. Put phone into edl mode, here is how: Hold Vol- and pwr, when the screen turns black keep holding them and Repeatedly press vol+ You will see "Qualcomm HS-USB QDLoader 9008" under "Ports (COM & LPT)" in device manager when it is in edl. If the screen shows anything after reboot, instantly retry again.

    4. When it is in EDL Mode, open partition manager and make a backup of these partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.

    5. After backing up, erase the same partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.

    6. Now after erasing it is sort of important to not let it boot to android, and instead boot to download mode. Here is how: force reboot with vol- and pwr button. As soon as it disconnects from windows, Release the Vol- and Power buttons and hold Vol+ to get into Download Mode.

    7. When it enters Download mode, open LGUP and select partition DL. Select your favourite V60 KDZ too.

    8. Click on start, then it will prompt you to select partitions that can be flashed, select every partition EXCEPT "SID_A SID_B AND ABL_A ABL_B" then confirm. (NOTE: DO NOT CLICK "SELECT ALL" IT IS BUGGED AND WILL FLASH ALL PARTITIONS, EVEN IF UNSELECTED AFTER)

    9. Let it install, after that you should be done, hidden menu won't work but you can install this apk to be able to enter hidden menu and fix the fingerprint on an unlocked bootloader. https://drive.google.com/file/d/1g-7BQ_Jlmi-5tpbMg383LaiYr5YjTmqQ/view?usp=drivesdk
    4
    Hey! I'm in the same situation as you, carrier unlocked ATT ebayed to Europe, stuck on A10. Were you be able to crossflash? If so, i would thank you deeply for a quick rundown on the steps :)
    1. Download and install QPST, when installed launch it and select the firehose and Nand type e.g. UFS.
    2. Download and install this LGUP from here: . In the installer select "Install LG Drivers"
    3. Put phone into edl mode, here is how: Hold Vol- and pwr, when the screen turns black keep holding them and Repeatedly press vol+ You will see "Qualcomm HS-USB QDLoader 9008" under "Ports (COM & LPT)" in device manager when it is in edl. If the screen shows anything after reboot, instantly retry again.

    4. When it is in EDL Mode, open partition manager and make a backup of these partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.
    5. After backing up, erase the same partitions "FTM, OP_A OP_B, MODEM_A MODEM_B, SID_A SID_B.
    6. Now after erasing it is sort of important to not let it boot to android, and instead boot to download mode. Here is how: force reboot with vol- and pwr button. As soon as it disconnects from windows, Release the Vol- and Power buttons and hold Vol+ to get into Download Mode.

    7. When it enters Download mode, open LGUP and select partition DL. Select your favourite V60 KDZ too.
    8. 8. Click on start, then it will prompt you to select partitions that can be flashed, select every partition EXCEPT "SID_A SID_B AND ABL_A ABL_B" then confirm.
      (NOTE: DO NOT CLICK "SELECT ALL" IT IS BUGGED AND WILL FLASH ALL PARTITIONS, EVEN IF UNSELECTED AFTER)
    9. Let it install, after that you should be done, hidden menu won't work but you can install this apk to be able to enter hidden menu and fix the fingerprint on an unlocked bootloader.

      Written by: Leronex
    3
    How you did crosh-flash for att? Need instructions pls
    One question in advance:

    If your device has a SIM lock, what I'm going to write here might not work for you.
    But more like a refusal of the LGUP tool to do the flash shouldn't actually happen.

    As a first step you should select yourself in the following menu:

    * # 546368 # * 600 # ---> SVC Menu ---> MID Info

    Save or write down the data specified there, especially the data under "MID Values".

    Furthermore, write down the values of the IMPL and FUSG

    I'm assuming that you have the right firmware for cross-flattening as a kdz file. I did several steps ...
    First from AT&T to Verizon, then from Verizon to TMO and then from TMO to EA (EUR). I did it for no particular reason, I just tried it out.
    I used LGUPCMD as a tool (see appendix). In the archive you will find detailed instructions on how to use the tool. I hope you know how to work with command line ...

    Before you get started, 2 more questions:

    Which software version do you have now?
    Which software version do you want to end up with?

    With Crossflash, I would not update from Android 10 to 11 straight away, but do it in a second flash as an upgrade.

    But then you need the GUI version of LGUP (also in the appendix).

    You will most likely get an NT code error at some point, don't get nervous, you can get rid of it relatively easily, preferably in Android 10 ...