=== LOG ===
Waiting For Device Connection... 
USB PORT: SPRD U2S Diag (COM9)
Port: SPRD U2S Diag (COM9)
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: ZTE
 Model: Z2473
 Product: P606F21
 Manufacturer: ZTE
 Build: b
Read Internal Storage Info... OK
USERDATA: 102.46 GB
USERDATA: ENCRYPTED
Waiting for server........ OK
Backup important partitions
  Backup persist... OK
RESET FRP... OK
Rebooting... OK
Elapsed Time: 15 secs, 828 msecs