I got an iphone 3G on 3.0 with 4.0 baseband.
Lately it just started randomly dropping calls (when I am recharging it, I cannot receive any phone call). I am looking for an advice on what to do.
I want to just restore it to 3.0, so is it safe to do:
- restore to stock 3.0
- use redsn0w 0.9.2 to jailbreak.
- use ultrasn0w from cydia to unlock