Hi, you can only downgrade to ios 5.1.1 if you have an a4 device (iphone 4, iphone 3gs and ipod touch 4g) and you have saved the 5.1.1 shsh blobs.. The new ios 5.1.1 ipsw firmware software update includes the major bug fixes, improves the reliability of using hdr option, fixing the addresses bugs and some other minor bug fixes. download and install ios 5.1.1 on your iphone 4, iphone 4s, iphone 3gs, ipad, ipad 2, the new ipad 3, ipod 4g/3g touch devices for better improvement of your idevices.. Download ios 5.1 for iphone 4s, 4, 3gs, ipad and ipod touch [direct links] by ben reid | march 7th, 2012 unlike the apparent panic displayed by apple in the run-up to the original ios 5 release, which saw an near-unprecedented number of betas seeded to members of the fruit company’s developer program, there have been comparatively few reports.
