V35 Thinq Unlocking

[phodina]

Hi @kaneorotar ,

I'm attempting to unlock the V35 Thinq phone based on your instructions.

However, on Windows I get this error. Could you help me?

2023-09-14 18:31:03.850    Validating Application Configuration
2023-09-14 18:31:03.867    Load APP Configuration
2023-09-14 18:31:03.894    COM:11
2023-09-14 18:31:03.894    PBLDOWNLOADPROTOCOL:0
2023-09-14 18:31:03.894    PROGRAMMER:True
2023-09-14 18:31:03.894    PROGRAMMER:C:\Users\pethod\Downloads\prog_ufs_firehose_Sdm845_lge.elf
2023-09-14 18:31:03.894    RESETSAHARASTATEMACHINE:False
2023-09-14 18:31:03.894    SAHARAREADSERIALNO:False
2023-09-14 18:31:03.894    SEARCHPATH:C:\Users\pethod\Downloads
2023-09-14 18:31:03.894    ACKRAWDATAEVERYNUMPACKETS:False
2023-09-14 18:31:03.894    ACKRAWDATAEVERYNUMPACKETS:100
2023-09-14 18:31:03.894    MAXPAYLOADSIZETOTARGETINBYTES:False
2023-09-14 18:31:03.894    MAXPAYLOADSIZETOTARGETINBYTES:49152
2023-09-14 18:31:03.894    DEVICETYPE:ufs
2023-09-14 18:31:03.894    PLATFORM:8x26
2023-09-14 18:31:03.894    VALIDATIONMODE:0
2023-09-14 18:31:03.894    RESETAFTERDOWNLOAD:False
2023-09-14 18:31:03.894    MAXDIGESTTABLESIZE:8192
2023-09-14 18:31:03.894    SWITCHTOFIREHOSETIMEOUT:30
2023-09-14 18:31:03.900    RESETTIMEOUT:200
2023-09-14 18:31:03.900    RESETDELAYTIME:2
2023-09-14 18:31:03.900    METABUILD:
2023-09-14 18:31:03.900    METABUILD:
2023-09-14 18:31:03.900    FLATBUILDPATH:C:\
2023-09-14 18:31:03.900    FLATBUILDFORCEOVERRIDE:True
2023-09-14 18:31:03.900    QCNPATH:C:\Temp\00000000.qcn
2023-09-14 18:31:03.900    QCNAUTOBACKUPRESTORE:False
2023-09-14 18:31:03.900    SPCCODE:000000
2023-09-14 18:31:03.900    ENABLEMULTISIM:False
2023-09-14 18:31:03.900    AUTOPRESERVEPARTITIONS:False
2023-09-14 18:31:03.900    PARTITIONPRESERVEMODE:0
2023-09-14 18:31:03.900    PRESERVEDPARTITIONS:0
2023-09-14 18:31:03.900    PRESERVEDPARTITIONS:
2023-09-14 18:31:03.900    ERASEALL:False
2023-09-14 18:31:03.901    Load ARG Configuration
2023-09-14 18:31:03.955    Validating Download Configuration
2023-09-14 18:31:03.955    Image Search Path: C:\Users\pethod\Downloads
2023-09-14 18:31:03.965    Programmer Path:C:\Users\pethod\Downloads\prog_ufs_firehose_Sdm845_lge.elf
2023-09-14 18:31:04.907    Process Index:0
2023-09-14 18:31:04.926    Qualcomm Flash Image Loader (QFIL) 2.0.2.3
2023-09-14 18:31:40.837    Start Download
2023-09-14 18:31:40.846    Program Path:C:\Users\pethod\Downloads\prog_ufs_firehose_Sdm845_lge.elf
2023-09-14 18:31:40.854    ***** Working Folder:C:\Users\pethod\AppData\Roaming\Qualcomm\QFIL\COMPORT_11
2023-09-14 18:31:40.914    Binary build date: Apr 27 2018 @ 03:04:33
2023-09-14 18:31:40.914    QSAHARASERVER CALLED LIKE THIS: 'C:\Program Files (x86)\Qualcomm\QPST\bin\QSaharaServer.ex'Current working dir: C:\Users\pethod\AppData\Roaming\Qualcomm\QFIL\COMPORT_11
2023-09-14 18:31:40.914    Sahara mappings:
2023-09-14 18:31:40.914    2: amss.mbn
2023-09-14 18:31:40.914    6: apps.mbn
2023-09-14 18:31:40.914    8: dsp1.mbn
2023-09-14 18:31:40.914    10: dbl.mbn
2023-09-14 18:31:40.914    11: osbl.mbn
2023-09-14 18:31:40.914    12: dsp2.mbn
2023-09-14 18:31:40.922    16: efs1.mbn
2023-09-14 18:31:40.924    17: efs2.mbn
2023-09-14 18:31:40.924    20: efs3.mbn
2023-09-14 18:31:40.924    21: sbl1.mbn
2023-09-14 18:31:40.924    22: sbl2.mbn
2023-09-14 18:31:40.924    23: rpm.mbn
2023-09-14 18:31:40.924    25: tz.mbn
2023-09-14 18:31:40.924    28: dsp3.mbn
2023-09-14 18:31:40.924    29: acdb.mbn
2023-09-14 18:31:40.924    30: wdt.mbn
2023-09-14 18:31:40.924    31: mba.mbn
2023-09-14 18:31:40.924    13: C:\Users\pethod\Downloads\prog_ufs_firehose_Sdm845_lge.elf
2023-09-14 18:31:40.924    
2023-09-14 18:31:40.924    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.933    
2023-09-14 18:31:40.933    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.933    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.935    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.935    
2023-09-14 18:31:40.943    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.943    
2023-09-14 18:31:40.943    18:31:40: ERROR: function: port_connect:100 Failed to open com port handle
2023-09-14 18:31:40.945    
2023-09-14 18:31:40.945    18:31:40: ERROR: function: main:314 Could not connect to \\.\COM11
2023-09-14 18:31:40.945    Download Fail:Sahara Fail:QSaharaServer Fail:Process fail
2023-09-14 18:31:40.954    Finish Get GPT

[kaneorotar]

Looks like it is having problem connecting to the COM port. If the COM device does show up in device manager when this is happening, try to make sure you are running QFIL with Admin privileges.

[phodina]

@kaneorotar Yes, it was an issue with the cable or more about the connector on the LG phone, where it disconnected.

However, I've been able to root the phone.

The only additional step I had to do was first downgrade the device - fingers crossed and passed the Antirollback check - to Android 9 and then the guide worked.

[phodina]

Is there a way to get fastboot mode on the LG devices? I'd like to port the PostmarketOS there and will need to flash the partitions. The LG UP allows to flash only the files signed by LG, right?

[kaneorotar]

Is there a way to get fastboot mode on the LG devices? I'd like to port the PostmarketOS there and will need to flash the partitions. The LG UP allows to flash only the files signed by LG, right?

I recall you can simply do adb reboot fastboot or adb reboot bootloader

Upon checking, the instructions do mention a way to get you into fastboot.

(Optional) Clear the laf_a partition (backup recommended). You will then be able to enter fastboot mode by press and holding Vol+ when booting. (laf_a holds the image for the LG Download mode and falls back to fastboot when failing to enter Download mode)

[phodina]

Is there a way to get fastboot mode on the LG devices? I'd like to port the PostmarketOS there and will need to flash the partitions. The LG UP allows to flash only the files signed by LG, right?

I recall you can simply do adb reboot fastboot or adb reboot bootloader

Unfortunately the adb approach does not work. The phone just reboots.

I'll check the other one by clearing the laf_a partition. I assume I should do the same (backup+erase) also for the slot b.

[phodina]

I've backup the partition and the zero it out with dd of=/dev/block/by-name/laf_a if=/dev/zero, same for the slot b.

However, neither the up or down + power button get me into the fastboot mode. Also the command adb reboot bootloader does not work with the laf partitions wiped.

But now I'm also not going into the LG download mode for the LGUP.

Should I flash there the engineering bootloader?