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Subject: upgrading locked 4s
Replies: 2 Views: 1508

jazz04 8.03.13 - 11:25pm
i intend to upgrade a locked iphone 4s to latest ios and to try other latest unlock chips interposer... but to be safe, how do i back up the current ios 5.1.1 which works well with a sim interposer ?? or anything one can do to so if the latest ios doesnt work, i will still be able to go back to the previous working version?? *

mandain 10.03.13 - 06:00am
http://www.youtube.com/watch?v=dhRk-qwbURI *

jazz04 10.03.13 - 10:06pm
anyway, i found that the RSIM5+ which i currently use to unlock my 5.1.1 works with 6.0 and 6.01, so am about to go for the 6.0.1. the question is, should i download the IPSW file from 3rd party sites or on Apple's site? you can recommend to me please. *

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