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07-21-2012, 08:01 AM #1How can I determine if my IPhone 3Gs 5.1.1 BB 06.15.00 can be DOWNGRADED?
Hi guys, I just need some help regarding for my IPhone which I updated to iOS 5.1.1 and unfortunately the baseband was updated to 06.15.00.
the phone says "SEARCHING then NO SERVICE" and Network is Not Available
and as of now I can't unlock it using ultrasn0w 1.2.7 ..
now I want to know if my phone can be downgraded without messing/bricking it up.
The serial number of my phone starts with 84005 ...
pls help me how to determine if I can downgraded it because i am thinking that if ever i downgraded it i can surely unlock it thnx .. !!
Last edited by sew600i; 07-21-2012 at 08:04 AM.
07-21-2012, 12:14 PM #2
Downgrade the baseband with the newest Redsn0w from blog.iphone-dev.org
The baseband will be downgraded to 5.13.04 and should work better with Ultrasn0w.
Edit: The fact that it's already been upgraded to 6.15.00 and it's still functional for the most part means it's not bricked. A downgrade will only help.
07-21-2012, 09:50 PM #3
07-22-2012, 04:00 AM #4
download redsn0w v0.9.14b2 from here: Dev-Team Blog
then follow the instructions at the top where it says "Baseband Freedom"
07-22-2012, 08:47 AM #5