Connect phone in PRELOADER Mode
Waiting for device... OK
Driver: [MediaTek Inc.,wdm_usb,MediaTek PreLoader USB VCOM_V1632 (Android),usb2ser.sys,3.0.1504.0]
Device found at COM160 [PRELOADER]
Open port... OK
Send start cmd... OK
Get HW code from device... 0717
Get sec config... OK [00000005]
Active sec flags: [SBC DAA]
Get HW & SW version from device... OK
HW VER: CA01, SW VER: 0200, HW SUB CODE: 8A00
Detect chip [MT6761]
Library Version [2]
Select platform... OK
Init BROM... OK
Force Charge... OK
Disable WatchDog Timer... OK
Reopen port for libver2... OK
Preloader exist. Skip connection verification.
Get ME ID... OK
ME_ID = 0x915BC6D1, 0x906F1E8C, 0xB1D112A2, 0x539588A7
Load DownloadAgent... OK
Search DA... OK [1]
Send bootloader... OK
Start bootloader... OK
Wait for answer from bootloader... OK
Send SYNC signal... OK
Setup device enviroment... error(STATUS_SEC_INVALID_DA_VER)
Selected model: Tecno BF7h (Tecno Pop 7 Pro)
Operation: Unlock bootloader
Software version: 6.6
Work ID: 22739423
why this error
Waiting for device... OK
Driver: [MediaTek Inc.,wdm_usb,MediaTek PreLoader USB VCOM_V1632 (Android),usb2ser.sys,3.0.1504.0]
Device found at COM160 [PRELOADER]
Open port... OK
Send start cmd... OK
Get HW code from device... 0717
Get sec config... OK [00000005]
Active sec flags: [SBC DAA]
Get HW & SW version from device... OK
HW VER: CA01, SW VER: 0200, HW SUB CODE: 8A00
Detect chip [MT6761]
Library Version [2]
Select platform... OK
Init BROM... OK
Force Charge... OK
Disable WatchDog Timer... OK
Reopen port for libver2... OK
Preloader exist. Skip connection verification.
Get ME ID... OK
ME_ID = 0x915BC6D1, 0x906F1E8C, 0xB1D112A2, 0x539588A7
Load DownloadAgent... OK
Search DA... OK [1]
Send bootloader... OK
Start bootloader... OK
Wait for answer from bootloader... OK
Send SYNC signal... OK
Setup device enviroment... error(STATUS_SEC_INVALID_DA_VER)
Selected model: Tecno BF7h (Tecno Pop 7 Pro)
Operation: Unlock bootloader
Software version: 6.6
Work ID: 22739423
why this error