How To Downgrade From iOS 7 to iOS 5.1.1 With No SHSH Blobs!
1)gotosettings>general>softwareupdate.TheappwillthenshowthelatestiOsversionavailableforyourdevice.Adownload&install ...,Youcan'tinstalliOS7(oreveniOS6)onaniPad1.ThelastversionofiOScapableofbeinginstalledonaniPad1isiOS5.1.1andsince ...,GotoSetting...。參考影片的文章的如下: