(MT6789) "BROM mode detected" but "Status: Waiting for PreLoader VCOM, please reconnect mobile to brom mode"

[eightelb]

Device: Infinix Note 30 X6833B

softbricked, can access stock recovery and tried flashing with fastboot but bootloader somehow got re-locked and unable to open fastboot HAL when try to unlock bootloader

tried updating firmware through sd card but all that i tried had "signature verification failed" so tried using mtkclient

Preloader -     CPU:                    MT6789/MT8781V(MTK Helio G99)
Preloader -     HW version:             0x0
Preloader -     WDT:                    0x10007000
Preloader -     Uart:                   0x11002000
Preloader -     Brom payload addr:      0x100a00
Preloader -     DA payload addr:        0x201000
Preloader -     Var1:                   0xa
Preloader - Disabling Watchdog...
Preloader - HW code:                    0x1208
Preloader - Target config:              0xe5
Preloader -     SBC enabled:            True
Preloader -     SLA enabled:            False
Preloader -     DAA enabled:            True
Preloader -     SWJTAG enabled:         True
Preloader -     EPP_PARAM at 0x600 after EMMC_BOOT/SDMMC_BOOT:  False
Preloader -     Root cert required:     False
Preloader -     Mem read auth:          True
Preloader -     Mem write auth:         True
Preloader -     Cmd 0xC8 blocked:       True
Preloader - Get Target info
Preloader - BROM mode detected.
Preloader -     HW subcode:             0x8a00
Preloader -     HW Ver:                 0xca00
Preloader -     SW Ver:                 0x0
Preloader - ME_ID:                      6648E6F511C1DD68F0D81708C48C7B7A
Preloader - SOC_ID:                     15F161729AD61771FFEB9FA886359C871144BE3F92BDB1A91F1B3B81CBEF01C0
Preloader - Status: Waiting for PreLoader VCOM, please reconnect mobile to brom mode

[avangcom]

Hello
I have the same problem, please let me know the solution.

Preloader -     CPU:                    MT8127/MT3367()
Preloader -     HW version:             0x0
Preloader -     WDT:                    0x10007000
Preloader -     Uart:                   0x11002000
Preloader -     Brom payload addr:      0x100a00
Preloader -     DA payload addr:        0x201000
Preloader -     Var1:                   0xa
Preloader - Disabling Watchdog...
Preloader - HW code:                    0x8127
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:                 0xca04
Preloader -     SW Ver:                 0x0
Preloader - Status: Waiting for PreLoader VCOM, please reconnect mobile to brom mode