how to reset Sony Xperia X10i slution

Unlock procedure started, waiting for phone.
Power off phone, keep BACK button and insert usb cable.
Keep holding back key untill next prompt.
Connecting to the server
Please wait....
Send S1 Loader
Loader is sent, please wait...
Read device info.
CXC : 1226-2250
IMEI : 01237900574958
EROM AID : 0001
LOADER AID : 0001
AID TAMP STATE : NOT_TAMPERED
SE X10 GROUP
- HOLD THE BACK KEY
IMEI : 01237900574958
- SE UNLOCK STARTED(2.3).
- WAITING USER ACTION
- WAITING PHONE
Version : 2.3.3 OK.
- Phone found, waiting root.
- Can take up to 1 min, do not touch phone!!!.
If stuck here more then 1 min, reconect usb cable.
- ROOT ACCESS OK
- SE UNLOCK START
Changes made..
- STATUS: OK
Wait untill phone full power on.
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Log saved to:
logs\01237900574958_XperiaX10i_1.txt