[GUIDE] How to Unlock Bootloader of LG G8X!!! - LG G8X ThinQ Guides, News, & Discussion

This Guide will explain how to unlock your LG G8X
* Disclaimer*
* I am not responsible for bricked devices, dead SD cards, thermonuclear war,
* or you getting fired because the alarm app failed. Please do some research
* YOU are choosing to make these modifications, and if
* you blame me in any way for what happens to your device, I will laugh at you.
*Wait, what? No. Me or somebody else will help you
Click to expand...
Click to collapse
Unlock Prerequisites:
Make sure you have "Enable OEM Unlock" enabled in developer options, along with USB Debugging. Download everything given in the downloads section. Backup EFS using QPST.
How to backup EFS (xqcn) through QPST?
In phone, dial *#546368#*850#, you’ll be in hidden menu now. G
Go to SVC Menu>Port Check Test> Enable Port Check. Connect Phone to PC, select “File transfer” mode in your phone.
Now, open QPST
Click on “Add Ports”
Uncheck “Show Serial and USB/QC Diagnostics ports only”
Choose COM* - USB/Unknown (LGE Mobile USB Serial Port, LMG850.....)
{
"lightbox_close": "Close",
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
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"lightbox_full_screen": "Full screen",
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"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Now click OK
Click on “Start Clients”
Choose “Software Download”
Choose Backup, and hit start. This will save the config to xqcn file.
Booting into EDL:
Note: Do while phone is booted, in normal mode.
1. Plug in your Phone to your PC
2. Press and hold Power and Volume Down
3. As soon as your screen is blank, rapidly start pressing volume up.
4. If you've successfully booted into EDL, your screen will be completely blank and the device manager will show (Under COM Ports): Qualcomm HS-USB QDLoader 9008
Now Let’s UNLOCK!!!
Downloads:
QPST: https://drive.google.com/file/d/1qoVGeRSNSIpPHZe811mgqoJJe_1veM52/view?usp=drivesdk
ABL: https://drive.google.com/file/d/1WY6aqb6jf658ji1YRZ1iuDzt2GtH5c2e/view?usp=drivesdk
Firehose: https://drive.google.com/file/d/1oO_0_T6PCHl1SQzFHIeip1R8QDszwfLU/view?usp=drivesdk

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1. Launch QFIL
2. Change it to Flat Build, Choose programmer (Firehose), change emmc to UFS from the drown down pane at botton right corner.
3. Click on Tools> Partition Manager
4. BACKUP THEN FLASH.
How to backup?
Choose a partition, right click on it, select “Manage Partition Data”
Now click on “Read Data”, this will backup the partition to {Your username/App data/Roaming/Qualcomm/COM Port* as .bin file so you can flash it back if any problem arises)
Important partitions to backup: modemst1, modemst2 and abl
How to flash?
Choose abl_a, right click on it, select “Manage Partition Data”
Now click on “Load Image”, then browse to abl_a.bin that you have downloaded.
This will flash abl to abl_a, it will show that sending image is completed in logs.
Do the same for abl_b (use abl_a.bin) too
5. Press and hold Vol- and power till it shows No port available in QFIL, then release power button but keep holding vol-
6. You’ll be in fastboot now. (Check device manager, if it’s showing Android with a yellow triange you don’t have drivers for fastboot installed. Google “15 Seconds ADB Installer” and install it.
7. Run the command “fastboot oem unlock”
8. On phone, select “Unlock the bootloader” then press power.
9. Phone is unlocked now, do whatever you want... (Don’t do anything foolish tho...)
Known Issue: FP is broken...
Thanks to Torres (for the file), @Xsavi
Aditya Y, @JohnyCash2020, @[email protected] (For testing)
Will Update this guide with images etc...
You can also ask for help here: https://t.me/LG_G8X_India
Thankyou

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How to FIX Network?
1. Boot to edl mode.
2. Open Partition Manager in QFIL, restore backup of abl you created before flashing.
3. Reboot, and network will be back...

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THIS IS NOT EDL MODE. (This is Download mode for flashing KDZ, many people are confusing this with EDL)
.
IN EDL MODE SCREEN WILL BE BLANK AND YOUR PHONE WILL BE DETECTED AS Qualcomm HS-USB QDLoader 9008 not LGE AndroidNet Serial...

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I am following the unlock tutorial till to "4. If you've successfully booted into EDL, your screen will be completely blank and the device manager will show (Under COM Ports): Qualcomm HS-USB QDLoader 9008" but when I boot into EDL new COM appear (COM11) with state enabled and label "COM11 (auto add)" but I don't see "Qualcomm HS-USB QDLoader 9008"
When after I launch QFIL, I see "No Port Avaiilable"... any help?

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diejuse said:
I am following the unlock tutorial till to "4. If you've successfully booted into EDL, your screen will be completely blank and the device manager will show (Under COM Ports): Qualcomm HS-USB QDLoader 9008" but when I boot into EDL new COM appear (COM11) with state enabled and label "COM11 (auto add)" but I don't see "Qualcomm HS-USB QDLoader 9008"
When after I launch QFIL, I see "No Port Avaiilable"... any help?
Click to expand...
Click to collapse
Send a photo of device manager after phone is in edl please...

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Hi, thanks for the guide.
A few questions though:
1) Can we relock the bootloader and return it back to the stock state by the appropriate fastboot commands ?
Since FP is not working right now or incase something else goes wrong ?
2) Does this process wipe any data ?
Thanks for the help !

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diejuse said:
I am following the unlock tutorial till to "4. If you've successfully booted into EDL, your screen will be completely blank and the device manager will show (Under COM Ports): Qualcomm HS-USB QDLoader 9008" but when I boot into EDL new COM appear (COM11) with state enabled and label "COM11 (auto add)" but I don't see "Qualcomm HS-USB QDLoader 9008"
When after I launch QFIL, I see "No Port Avaiilable"... any help?
Click to expand...
Click to collapse
Send a photo of device manager after phone is in edl please...
camlin said:
Hi, thanks for the guide.
A few questions though:
1) Can we relock the bootloader and return it back to the stock state by the appropriate fastboot commands ?
Since FP is not working right now or incase something else goes wrong ?
2) Does this process wipe any data ?
Thanks for the help !
Click to expand...
Click to collapse
1) Yes.
2)Yes.

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Ronith128 said:
Send a photo of device manager after phone is in edl please...
Click to expand...
Click to collapse
I solved the problem, thanks. I have just unlocked the bootloader, no network problem. I am going to try to root now...

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diejuse said:
I solved the problem, thanks. I have just unlocked the bootloader, no network problem. I am going to try to root now...
Click to expand...
Click to collapse
Network problem only present in LG G8X released in India ig... Please confirm if fingerprint is working or not plss.

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Fingerprint is broken, not working. I have two problems:
1º When the phone starts I get this message: " When start it appears "WARNING: Current version is not available for user. Can't finde matched carrier. Check NT-Code: 0"
2º I have flashed Magisk_Patched.img but I don't see Magisk app and Root Checker app says me the device is not rooted.

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diejuse said:
Fingerprint is broken, not working. I have two problems:
1º When the phone starts I get this message: " When start it appears "WARNING: Current version is not available for user. Can't finde matched carrier. Check NT-Code: 0"
2º I have flashed Magisk_Patched.img but I don't see Magisk app and Root Checker app says me the device is not rooted.
Click to expand...
Click to collapse
1) Can’t fix it right now. Because we have two different devices, so I don’t know what’s the problem...
2) Install Magisk Manager..

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My phone not show QPST, dont show me com ports, the list are empty
im using lg g8x from Brazil

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I have root now but sound is not working. Please help!

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SLASH32 said:
My phone not show QPST, dont show me com ports, the list are empty
im using lg g8x from Brazil
Click to expand...
Click to collapse
Are you in edl? Share your Device manager screenshot pls...

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Where I can get fastboot drivers for g8x
adb is working fine but when I am running fastboot devices command after getting into fastboot on mobile
nothing is happening and I have installed 15 seconds installer as well but still same problem
please help I stuck between process and with no network
edit
I used different pc and it worked
thanks

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So bit of a situation here I followed the guide but now the device is unresponsive. I flashed the Firehose and it still shows in QPST but I am stuck there I don't know how to continue. I cannot find the options you are speaking of.
UPDATE: I got the device to boot but I still don't understand your guide. I'm following best I can

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After patching both abl I cannot get the device to boot into fastboot mode? I'm using the correct combination in guide but I am only brought too the splash lg g8x thinq screen and no further. The device won't even boot regularly now..

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I've made a backup with QPST. When I boot the phone into EDL mode the driver does not change to the "Qualcomm HS-USB QDLoader 9008" it's still showing as "LGE AndroidNet USB Serial Port (COM4)" and when I try to follow the steps to it fails once I try to open the partition manager.
Here is the log from QFIL
2020-12-04 20:21:08.820 ***** Working Folder:C:\Users\UserName\AppData\Roaming\Qualcomm\QFIL\BHI
2020-12-04 20:21:08.828 Validating Application Configuration
2020-12-04 20:21:08.834 Load APP Configuration
2020-12-04 20:21:08.850 COM:-1
2020-12-04 20:21:08.850 PBLDOWNLOADPROTOCOL:0
2020-12-04 20:21:08.850 PROGRAMMER:True
2020-12-04 20:21:08.850 PROGRAMMERrog_ufs_firehose_sm8150_lge.elf
2020-12-04 20:21:08.850 RESETSAHARASTATEMACHINE:False
2020-12-04 20:21:08.850 SAHARAREADSERIALNO:False
2020-12-04 20:21:08.850 SEARCHPATH:\Users\UserName\Downloads\Android\LG G8x ThinQ\Unlock Bootloader
2020-12-04 20:21:08.850 ACKRAWDATAEVERYNUMPACKETS:False
2020-12-04 20:21:08.850 ACKRAWDATAEVERYNUMPACKETS:100
2020-12-04 20:21:08.850 MAXPAYLOADSIZETOTARGETINBYTES:False
2020-12-04 20:21:08.850 MAXPAYLOADSIZETOTARGETINBYTES:49152
2020-12-04 20:21:08.850 ACTIVEBOOTPARTITION:False
2020-12-04 20:21:08.850 ACTIVEBOOTPARTITION:0
2020-12-04 20:21:08.850 PHYPARTITIONS:False
2020-12-04 20:21:08.850 PHYPARTITIONS:0,1,2,4,5
2020-12-04 20:21:08.850 DEVICETYPE:ufs
2020-12-04 20:21:08.850 PLATFORM:8x26
2020-12-04 20:21:08.850 VALIDATIONMODE:0
2020-12-04 20:21:08.850 RESETAFTERDOWNLOAD:False
2020-12-04 20:21:08.850 SWITCHTOFIREHOSETIMEOUT:30
2020-12-04 20:21:08.850 RESETTIMEOUT:200
2020-12-04 20:21:08.850 RESETDELAYTIME:2
2020-12-04 20:21:08.850 METABUILD:
2020-12-04 20:21:08.850 METABUILD:
2020-12-04 20:21:08.850 FLATBUILDPATH:C:\
2020-12-04 20:21:08.850 FLATBUILDFORCEOVERRIDE:True
2020-12-04 20:21:08.850 QCNPATH:C:\Temp\00000000.qcn
2020-12-04 20:21:08.851 QCNAUTOBACKUPRESTORE:False
2020-12-04 20:21:08.851 SPCCODE:000000
2020-12-04 20:21:08.851 ENABLEMULTISIM:False
2020-12-04 20:21:08.851 AUTOPRESERVEPARTITIONS:False
2020-12-04 20:21:08.851 PARTITIONPRESERVEMODE:0
2020-12-04 20:21:08.851 PRESERVEDPARTITIONS:0
2020-12-04 20:21:08.851 PRESERVEDPARTITIONS:
2020-12-04 20:21:08.851 ERASEALL:False
2020-12-04 20:21:08.851 Load ARG Configuration
2020-12-04 20:21:08.885 Validating Download Configuration
2020-12-04 20:21:08.886 Image Search Path: D:\Users\UserName\Downloads\Android\LG G8x ThinQ\Unlock Bootloader
2020-12-04 20:21:08.888 Programmer Path:\Users\UserName\Downloads\Android\LG G8x ThinQ\Unlock Bootloader\prog_ufs_firehose_sm8150_lge.elf
2020-12-04 20:21:09.109 Process Index:0
2020-12-04 20:21:09.124 Qualcomm Flash Image Loader (QFIL) 2.0.3.5
2020-12-04 20:24:30.396 Start Download
2020-12-04 20:24:30.399 COM Port number:4
2020-12-04 20:24:30.409 Switch To EDL
2020-12-04 20:24:34.623 Switch To EDL Fail Failed to Switch to Emergency Download mode
Click to expand...
Click to collapse

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jlharmon001 said:
I've made a backup with QPST. When I boot the phone into EDL mode the driver does not change to the "Qualcomm HS-USB QDLoader 9008" it's still showing as "LGE AndroidNet USB Serial Port (COM4)" and when I try to follow the steps to it fails once I try to open the partition manager.
Here is the log from QFIL
Click to expand...
Click to collapse
you are not getting into edl mode
try again as said to get into edl
it may take 3 to 4 tries