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.. Ios 5.1.1 firmware for iphone, ipad and ipod touch is now available for download.apple has just released ios 5.1.1 update for iphone 4s, iphone 4, 3gs, ipad and ipod touch. ios 5.1.1 brings improvements and bug fixes.. On the other hand, non-jailbroken users are highly advised to update to ios 5.1.1 either by plugging their device into a computer and update through itunes or through ota updates which can be accessed in your idevice through settings > general > software update..
Ios 5.1.1 was released for 19 devices. view information for this and more at ipsw downloads. download current and previous versions of apple's ios firmware and receive push notifications when new firmwares are released. Below are the direct links for the ios firmware updates that have been released for the iphone by apple so far. if you’re not sure which firmware file to download for your iphone, then check the post which will help you identify which firmware file to download based on your iphone’s model.. Download ios firmware (ipsw) files for iphone below you'll find direct download links to firmware files for all iphone models. firmware files available for download on this site are hosted on an apple server..
