How to restore iPhone 3GS firmware 4.2.1 (bb 6.15) stuck in recovery/dfu mode

[postlink] https://howtodoiphone.blogspot.com/2013/03/how-to-restore-iphone-3gs-firmware-421.html[/postlink] http://www.youtube.com/watch?v=d9GWpwizBZYendofvid
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Title :How to restore iPhone 3GS firmware 4.2.1 (bb 6.15) stuck in recovery/dfu mode
Tag : how to iphone 3gs
Time : 8.63 min.
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How to restore iPhone 3GS firmware 4.2.1 (bb 6.15) stuck in recovery/dfu mode

PCexpres dev team =) iPhone 3GS fw - iOS 4.2.1 baseband iPad 6.15.00 bootrom - newer - Install iTunes 10.1 - Plug in iPhone - Restore IOS 4.2.1 (Apple Origin...
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