=== LOG ===
Waiting For Device Connection... 
USB PORT: SPRD U2S Diag (COM16)
Port: SPRD U2S Diag (COM16)
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: IKU
 Model: T4
 Product: T4
 Manufacturer: INCAR
 Android Version: 8.1.0 (Oreo)
 Security Patch: 2019-08-05
 Build ID: OPM2.171019.012
 Build Date: WED DEC  4 11:22:15 CST 2019
 Display ID: IKU_T4_V1.00_20191204
 Fingerprint: IKU/T4/T4:8.1.0/OPM2.171019.012/35508:USER/RELEASE-KEYS
 Build: 35508
Read Internal Storage Info... OK
USERDATA: 11.92 GB
USERDATA: ENCRYPTED
Waiting for server........ OK
Backup important partitions
  Backup persist... OK
RESET FRP... OK
Rebooting... OK
Elapsed Time: 22 secs, 328 msecs