=== LOG ===
Waiting For Device Connection... 
USB PORT: ‪SPRD U2S Diag (COM637)‬
Port: ‪SPRD U2S Diag (COM637)‬
Manufacturer: UNISOC Communications Inc.
OPEN COM PORT... OK
Waiting for server........ OK
Handshake NAND_FDL... OK
Boot version: SPRD3
Sending payload... OK
Sending preloader... OK
Sending nand_fdl loader... OK
Read Build Prop Info... OK
 Brand: WELCOME
 Model: X6851B
 Product: X6851B
 Manufacturer: WELCOME
 Android Version: 8.1.0 (Oreo)
 Security Patch: 2023-02-20
 Build ID: OPM2.171019.012
 Build Date: WED JUL 24 15:24:36 CST 2024
 Display ID: OPM2.171019.012 RELEASE-KEYS
 Fingerprint: SPRD/SP7731E_1H10_NATIVE/SP7731E_1H10:8.1.0/OPM2.171019.012/30315:USER/RELEASE-KEYS
 Build: 30315
Read Internal Storage Info... OK
USERDATA: 11.98 GB
USERDATA: ENCRYPTED
Waiting for server........ OK
Backup important partitions
  Backup persist... OK
RESET FRP... OK
Rebooting... OK
Elapsed Time: 20 secs, 740 msecs