Z3X vivo y21 security fail...plz fix it

[dev.rayhan954]

Selected model: Vivo PD2139BF (Vivo Y21 (2021))
Operation: Read PTT
Software version: 4.9
Work ID: 1241887

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 COM11 [PRELOADER]
Open port... OK
Send start cmd... OK
Get HW code from device... 0766
Get sec config... OK [00000005]
Active sec flags: [SBC DAA]
Get HW & SW version from device... OK
HW VER: CA00, SW VER: 0000, HW SUB CODE: 8A00
Detect chip [MT6765]
LibUSB installed
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 = 0x0B2A4772, 0x1203B342, 0x282480B7, 0x245440A1
Load DownloadAgent... OK
Search DA... OK [2]
Send bootloader... error(DA_INIT_KEY_FAIL)
Advanced Authorization (Preloader) not supported for this preloader version.

 

[sohail khan bewafa]

Reading security from phone... op_result:[Authentication Key not yet programmed]


Selected model: Vivo PD2139BF (Vivo Y21 (2021))
Operation: Repair
Software version: 6.10
Work ID: 35008321
this error occurs while repairindg the security ,any solution please come expert