Want to upgrade jailbroken/unlocked iPhone 4 from 5.0.1 to 5.1.1
While there are numerous "how to jailbreak" posts across the net, I wanted to confirm the approach I need to use to BOTH jailbreak and unlock:
Unlocked for a non-US carrier (Airtel)
What I want to do:
Upgrade to iOS 5.1.1
Retain the baseband at 1.59.00
Unlocked for the same non-US carrier (Airtel)
What approach do I need to take?
Thanks in advance.
- 07-04-2012, 12:30 AM #2
Use redsnow and create a custom ipsw so it preserves your baseband and upgrade in iTunes using shift and update and then select your custom file
Since you have a non us carrier after update is complete
Close iTunes and teather jb with redsnow
This will bypass the activation screen too
Next in cydia install rocky raccoon to untether your jb
Then install ultra snow 5.1.1 fixer
Then install ultrasnow
You now have 5.1.1 .. On 1.59.00 bb .. Jb and unlocked
Beamed from my iPad 2 routed and bouncing across the globe on multiple servers and brought to you using Tapatalk !
- 07-04-2012, 12:08 PM #4iMore Genius
- 3,044 Posts
Follow the onscreen instructions from red snow and your phone will boot up and go to lock screen.
Then you can go to cydia and install the rocky raccoon.
- 07-04-2012, 12:45 PM #5
- 07-05-2012, 10:54 AM #6
Thanks Peligro911 and 3cit. After a few anxious hours and some R&D, I've gotten it to work mostly the way you described it.
A few things for folks who might read this later:
- Ultrasn0w Fixer 5.1.1 might cause an apparent signal loss (reduces the signal to just 1 bar). After installing Ultrasn0w, you can safely remove the fixer
- I had to use "Jailbreak and install Cydia" in redsn0w to get it to work.
- The modified IPSW ("No_BB") needed to be installed through redsn0w
- 07-17-2012, 08:45 PM #9
- 07-18-2012, 03:06 PM #10
I would have used Sn0wbreeze, the program creates your IPSW firmware, jailbreaks it, hacktivates the device, and of course preserves your baseband - in a single operation.
- 07-19-2012, 10:11 AM #11