iPhone iPhone 4 (ultrasn0w unlocked) upgrade to 6.1.2?

[swipe]

I can't seem to find a concrete answer anywhere.

has anyone been able to successfully update their ultrasn0w unlocked iPhone 4 from iOS 5.x to iOS 6.1.2 (preserving the baseband and unlocking with ultrasn0w)?

what steps/tools did you use?



thanks!

 

[dhlizard]

Some are having issues with Ultrasn0w 1.28 on iPhone 4 in iOS6.
For others, it works.

 

[swipe]

hm, do I use redsn0w to upgrade it? I'll give it a shot. worst case scenario ultrasn0w needs to be updated. at least it will be on 6.1.2 with an untouched baseband.

 

[Applejuiced]

Is your iphone locked to AT&T by any chance?