Now, it is messes. From tinyumbrella, the iphone is v4.1, BB is 06.15.00-6.4_M3S2, serial number QR14117... and the iphone stuck in recovery mode, only can use emergency call. Here is how come: 1. The original is v4.3.5, BB 06.15.02 2. update FW to v5.0.1, BB 06.15.05 by offically itune update 3. Downgrade to v4.1 by itune 10.4, and kick off error 1015 by redsn0w 4. jailbreak by redsn0w, set BB to iPad (06.15.00), success 5. suffer to find ultrasn0w, can not find it from cydia because alwasys be waiting... 6. find ultrasn0w 1.2.5 releases soon / already, and find many iphone app need v4.2 or higher, then try to upgrade to 5.0.1 7. generated custom v5.0.1 ipsw by redsn0w to perserve BB. 8. try to restore by itune, but failed due to error 10 9. by sn0wbreeze v2.8b11, generated custom v5.0.1 ipsw, then try to restore by itune, failled as well due to error 20 10. restore v4.1 by itune, error 1015 occurred, try to kick off it by redsn0w, not works... What should I do now? appreciate any suggestions. Thanks!