I have a jb (blackra1n) 3gs 3.1.2 untethered.
While running mywi today my service just cut off ('no service' where bars are). I then closed out of mywi and tried to respring (bosspref), which froze for about 5 minutes. So I held power and home for 10 sec now I cant get passed the apple logo.
While trying to boot up, a very faint pinwheel joins the apple logo and slowly tries to finish its cycle before going black and re-entering apple logo.
To make matters worse, the phone is near dead and now the only other logo that appears is the red battery with a plug and bolt, or just bolt if Im plugged in. Instead of the iphone charging, it remains on the red battery for a couple minutes, then goes to the apple logo. I left it alone "charging" for 1hr 30min and it still wanted to die minutes after being unplugged.
I have tried the following multiple times:
-Fiddled with the power and home buttons
-Power and home for 10 sec
-mute button 4 times (up,down,up,down) power and home 6-10sec
-put phone into recovery mode (dfu?.. phone had black screen) power and home 10 sec, release power continue to hold home briefly while plugged in. iTunes (9.1) recognized phone as being in recovery
-Tried to charge for about an hour in this state.. did not work
Finally I downloaded pwnage 3.1.5 and it recognized my phone while it was in recovery mode, enough for me to build the custom firmware package. I tried to restore with the pwnage bundle but I received "1600 error" and could not proceed. Any help or advice would be greatly appreciated. I will research more about 1600 and hopefully find a solution, but if anyone has anything please help!