MT6771 Unlock Bootloader Failed

[Folralorwns]

I tried to unlock the bootloader for my device using the latest version, but it reported an error. And I was able to successfully unlock it before when using the commit 1a1af871, but because of the vendor's update, the older version was unable to handshake and could not read or write partitions. When using the latest version I can read and write the partitions normally, but I can't unlock the bootloader.

C:\Users\Administrator\Downloads\Compressed\mtkclient-main_2\mtkclient-main>python mtk.py da seccfg unlock
MTK Flash/Exploit Client Public V2.0.1 (c) B.Kerler 2018-2024

Preloader - Status: Waiting for PreLoader VCOM, please reconnect mobile to brom mode

Port - Hint:

Power off the phone before connecting.
For brom mode, press and hold vol up, vol dwn, or all hw buttons and connect usb.
For preloader mode, don't press any hw button and connect usb.
If it is already connected and on, hold power for 10 seconds to reset.

...........
Port - Device detected :)
Preloader - CPU: MT6771/MT8385/MT8183/MT8666(Helio P60/P70/G80)
Preloader - HW version: 0x0
Preloader - WDT: 0x10007000
Preloader - Uart: 0x11002000
Preloader - Brom payload addr: 0x100a00
Preloader - DA payload addr: 0x201000
Preloader - CQ_DMA addr: 0x10212000
Preloader - Var1: 0xa
Preloader - Disabling Watchdog...
Preloader - HW code: 0x788
Preloader - Target config: 0x0
Preloader - SBC enabled: False
Preloader - SLA enabled: False
Preloader - DAA enabled: False
Preloader - SWJTAG enabled: False
Preloader - EPP_PARAM at 0x600 after EMMC_BOOT/SDMMC_BOOT: False
Preloader - Root cert required: False
Preloader - Mem read auth: False
Preloader - Mem write auth: False
Preloader - Cmd 0xC8 blocked: False
Preloader - Get Target info
Preloader - HW subcode: 0x8a00
Preloader - HW Ver: 0xca00
Preloader - SW Ver: 0x0
Preloader - ME_ID: 35FB3F80FF7E15852A04D2433501A81D
Preloader - SOC_ID: A2C85A82E4140074B095BF2664EA8CC2B202C0D5CAEB8C675C342860E4629A97
DaHandler - Device is unprotected.
DaHandler - Device is in Preloader-Mode.
DAXFlash - Uploading xflash stage 1 from MTK_DA_V5.bin
XFlashExt - Patching da1 ...
Mtk - Patched "Patched loader msg" in preloader
Mtk - Patched "hash_check" in preloader
Mtk - Patched "Patched loader msg" in preloader
Mtk - Patched "get_vfy_policy" in preloader
XFlashExt - Patching da2 ...
XFlashExt - Security check patched
XFlashExt - DA version anti-rollback patched
XFlashExt - SBC patched to be disabled
XFlashExt - Register read/write not allowed patched
DAXFlash - Successfully uploaded stage 1, jumping ..
Preloader - Jumping to 0x200000
Preloader - Jumping to 0x200000: ok.
DAXFlash - Successfully received DA sync
DAXFlash - Uploading stage 2...
DAXFlash - Upload data was accepted. Jumping to stage 2...
DAXFlash - Boot to succeeded.
DAXFlash - Successfully uploaded stage 2
DAXFlash - DA SLA is disabled
DAXFlash - UFS Blocksize:0x1000
DAXFlash - UFS ID: MT128GAXAU2U22
DAXFlash - UFS MID: 0x2c
DAXFlash - UFS CID: 2c014d54313238474158415532553232
DAXFlash - UFS FWVer: 30313031
DAXFlash - UFS Serial: 534e30303030303100000000
DAXFlash - UFS LU0 Size: 0x1dcb000000
DAXFlash - UFS LU1 Size: 0x400000
DAXFlash - UFS LU2 Size: 0x400000
DAXFlash - HW-CODE : 0x788
DAXFlash - HWSUB-CODE : 0x8A00
DAXFlash - HW-VERSION : 0xCA00
DAXFlash - SW-VERSION : 0x0
DAXFlash - CHIP-EVOLUTION : 0x0
DAXFlash - DA-VERSION : 1.0
DAXFlash - Extensions were accepted. Jumping to extensions...
DAXFlash - Boot to succeeded.
DAXFlash - DA Extensions successfully added
XFlashExt - Detected V4 Lockstate
Sej - HACC init
Sej
Sej - [LIB]: SEJ Legacy Hardware seems not to be configured correctly. Results may be wrong.
Sej - HACC run
Sej - HACC terminate
Sej - HACC init
Sej - HACC run
Sej - HACC terminate
Sej - HACC init
Sej
Sej - [LIB]: SEJ Legacy Hardware seems not to be configured correctly. Results may be wrong.
Sej - HACC run
Sej - HACC terminate
DaHandler
DaHandler - [LIB]: Device has is either already unlocked or algo is unknown. Aborting.

seccfg.zip