The 4S can't really be unlocked right now; so I'd just do as you planned and unlock/jailbreak the 3G.
a) DON'T UPDATE TO 5 or 5.0.1 regularly. I can't stress this enough. You need a custom update to iOS 5.0.1 without updating your baseband (modem firmware version). Newer modem firmware versions aren't unlockable. Figure out which modem firmware version you have (in Settings-->About), and then google and see if it is compatible with newest version of Ultrasnow (the unlocking program).
b) If your current baseband version can be unlocked; then you need to download the 5.0.1 IPSW file (iOS file) for your phone, and download newest version of Redsnow (unlocking tool).
c) Make a custom IPSW file that will update your phone to ios 5.0.1
d) Use custom IPSW made and upgrade phone to 5.0.1 (and will keep your old baseband version to be unlocked)
e) once phone has been upgraded, you then jailbreak the phone using redsnow
f) once jailbroken, install ultrasnow (via Cydia program installed during jailbreak), which will unlock you phone.
good tutorials on iClarified.com
|