=== LOG ===
Waiting for server.....OK 
Waiting For Device Connection.....OK 
USB PORT: SPRD U2S Diag (COM23) 
Port: SPRD U2S Diag (COM23) 
OPEN COM PORT......OK 
Handshake...OK 
Writing : FDL1........OK 
Boot Block ver:..1.1 
Writing : FDL2........OK 
Auth....Waiting for server.....OK 
Decrypt rsa data....OK 
Send authentication packet........OK 
Disable transcode.......OK 
Enable Raw Data.......OK 
Formatting userdata..........OK 
Operation {Factory Reset} ID: EF4558CF79D9B751 
Elapsed time 00:48 -- Version 5.4.6 Release 0825 Build 656