Iphone 3GS cant downgrade to lower Baseband

Iphone 3GS cant downgrade to lower Baseband

Posted September 17, 2013 at 10:29am by nwana · 2098 views
Hi Guys, I have an iphone 3GS, Running IOS 6.13, Baseband 06.15.00, the phone is factor locked, and I have to downgrade baseband in order to get the Ultrasnow Unlock on Cydia. I have already downloaded already downloaded Cydia on the phone, but the problem is when I have to down downgrade it, After selecting Downgrade Baseband, it says ''Baseband Downgrade failed'' Is there a way to fix this problem? I will appreciate your help guys.


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