open ut tool
go to spd tab
generic / Tiger T616_64_Bypass
off unit hold voll down
salpak usb and wait...... mag done

logs
ERASE FRP Selected Platform : Tiger T616_64_Bypass
Connect Testpoint or hold VOL DOWN! Instruction here!
Waiting for device... COM9 (SPRD U2S Diag)
USB : USB\VID_1782&PID_4D00\5&23059E32&0&1
Initializing loader... OK
Protocol : SPRD3
Sending payload... OK
Sending auth data... OK
Sending preloader1... OK
Sending preloader2... OK
Booting loader, please wait... OK
Boot ver: Spreadtrum Boot Block version 1.1
Sending FDL1... OK
Sending FDL2... OK
Reading partitions info... OK [80] [1024]
Dual boot-slot : A
Reading device info... SKIP [EROFS]
Erasing FRP... OK
UNLOCKTOOL 2025.09.21.0
Elapsed time : 26 seconds
go to spd tab
generic / Tiger T616_64_Bypass
off unit hold voll down
salpak usb and wait...... mag done

logs
ERASE FRP Selected Platform : Tiger T616_64_Bypass
Connect Testpoint or hold VOL DOWN! Instruction here!
Waiting for device... COM9 (SPRD U2S Diag)
USB : USB\VID_1782&PID_4D00\5&23059E32&0&1
Initializing loader... OK
Protocol : SPRD3
Sending payload... OK
Sending auth data... OK
Sending preloader1... OK
Sending preloader2... OK
Booting loader, please wait... OK
Boot ver: Spreadtrum Boot Block version 1.1
Sending FDL1... OK
Sending FDL2... OK
Reading partitions info... OK [80] [1024]
Dual boot-slot : A
Reading device info... SKIP [EROFS]
Erasing FRP... OK
UNLOCKTOOL 2025.09.21.0
Elapsed time : 26 seconds

