this solution with cruiser work 100%, i tested many phones and work.
1. Select exact phone type - K750i, K750c or D750i.
2. Start the phone in recovery mode (via Force RSA recovery mode, CID=36).
3. Repair certificate and turn off the phone.
4. Reattach the phone in normal mode. It should be detected as brown CID36.
5. Unlock RSA incase the Repair EROM disable
6. Repair EROM.
7. Flash K750 full GDFS file.
8. Turn Off Phone
9. Reattach the phone.
10. Convert the phone to red CID36 using the special red CID36 EROM file:
http://forum.gsmhosting.com/vbb/att...achmentid=26828
11. Turn off the phone and reattach it. It should be detected as red CID36 now.
12. Flash main firmware.
13. Unlock RSA and reattach.
14. Flash raw FS.
15. Upload singed archive (select the file example:K750i_CXC125953_APAC1_R1J002_Red36.ck75sfa
16. Reattach it again.
17. Customize FS by one of the built-in customizations.
18. Shutdown FS.
19. Reattach Again
20. In Tab "Security RSA" tick "Format Security zone" and "Recalculate CRCs" then "write to security zone"
21. If this show "ERROR: Could not initialize GDFS access"
22. Then In Tab "Locks" Convert to Brown and Use Direct Unlock
23. Put it sim card and wait for few seconds the Please Wait will run for short while and your phone is ready to use.
hrich