3GS Baseband 6.15.00 problem
noob here, apologies if in wrong area but am desperate!
have been given an iphone 3GS which had been unlocked from Orange on 4.1 ios with baseband 6.15.00, phone just keeps randomly rebooting, had cydia installed and something called installeous.
tried to restore 4.1 official fw to remove the jailbreak, got various errors and phone has done something as cydia etc has gone and the phone reset, however it still just keeps randomly restarting quiet frequently. Have feeling it is because of the 6.15.00 baseband but I don't know what to try next?? any tips ideas articles will be greatly recieved.