3g frozen in lockscreen,unresponsive, reboots continually
My wife's iphone 3g just froze at the lockscreen. The slide bar is unresponsive and there is nothing I can do to unlock it. Powering down and rebooting only gets it back to the frozen lockscreen. The phone is warm to touch and battery also seem to drain rapidly. Connecting it to iTunes, iTunes recognizes the phone, and proceeds to sync it. After a few minutes the phone reboots itself back to the lockscreen. I can scp into the phone, but am not sure how to remedy the situation.
Here are some details of phone: firmware 3.1.2 and modem 05.11.07
I have blobs saved for firmware 4.0 onwards, but unfortunately not for 3.1.2 or 3.1.3.
Any suggestion as to how to fix the problem?
Should I need to restore the phone, is there anyway that I can restore to a sub 4.0 firmware? Also, a step by step process to restore so that I do not upgrade the baseband would be appreciated.