thanks for infinity team really you are the best now . t303 sucessfully unlocked this is the log :
COM9 [VCP0] selected
module v1.32
Device: Sony-Ericsson-T303
"advanced chip detection" active
Action: unlock
Checking data, wait...
Boot ...
Phone should be Switched OFF !
Press Power button now !
rom version: 0502
Connecting...
booting...
finalizing...
Boot done
Check connection ...
Check connection done
Set baud ...
115200
Set baud done
Check hardware ...
flash: 89890400040089:89890400000000
flash: Intel ST [def 0080x040000] 32Mb
software version: 1209-8242
software version: R2BD002
Check hardware done
Read data ...
reading Sony-Ericsson-T303_eeprom_calibration-1...
file saved: C:\Documents and Settings\mahamad\Desktop\Sony-Ericsson-T303_eeprom_calibration-1_20090504-152321.80E.bin
Read data done
Check data ...
Check data done
Write ...
............................
flash: 89890400040089:89890400000000
Write: simlock
Write done
Finished, time used: 196 sec
Remove/Install battery now !