iPhone (2G Fw 2.2) won't wake up from SLEEP MODE until reset (HOME+POWER)
I need some help here.
I upgraded a 2G iPhone from 1.1.4 (Ziphoned) to 2.2 (quickpwned): everything went smoothly.
Now, during normal usage, from time to time, the iPhone won't wake up from sleep mode even if I press home or power button. Pressing the buttons seems to have no effect at all.
When the iPhone is in this "dead" state if a call from another mobile I can get the line, it seems ringing, but the phone appears totally dead. (no sound, display off ...)
To recover I have to press simultaneously both the home and the power button for a few seconds and the iPhone resets.
I tried also FW 2.1, but the problem is still present.
It looks like a SW related issue but I'm not sure... any idea what is causing this?
Thanks guys for any help & Happy Holidays to everyone...