I have a factory unlocked iphone 4 coming with ios 4.2.1
each time I tried to restor it to 4.2.1 or now to 4.3.1, every thing goes ok but in restoring firmware, errror code 9 is appeared and iphone goes to recovery mode. I should use tiny umrella or fix recovery preserving my BB. I checked different cables and pcs as apple says but the problem has not fixed. also I restored 2 other factory unlocked iphone4 with my pc and there was no problem.
I used redsnow for tethered jailbreak first time. could any one help me to find the problem? is the problem related to iphone or jailbreak process?