iPhone 4 Downgrade from iOS 7.x.x to iOS 5.1.1 (WORKING BUT ONE BUG)First read full given note and steps then do downgrade

First your iphone is fully reseted it contains only jailbreak.
Do not install any app or tweak on it and keep it fresh.
Then open my documents/my music, u can see a folder named iTunes.
Rename it and write it like that (iTunes_old).
then download iTunes setup of which link given downwards in downloads.
then uninstall your installed itunes and install my given itunes which u downloaded.
Download iReb (link given downwards) and open as run as admin.
Then select iphone 4 and put it in dfu as iReb says, after ur iphone goes to dfu then close iReb.
open itunes then it will ask for restore, Then press shift to restore and select (iPhone3,1_5.1.1_9B206_GeekGrade.ipsw) link given downwards.
wait 5 mins and it again ask for restore but close itunes.
download and open redsnow (link given downwards).
open extras then select ipsw then select (iPhone3,1_5.1.1_9B206_Restore.ipsw)link given downwards.
then select just boot then press home + power , when the term is written (connected iphone 4 :recovery mode) disappears then immeditaley release power button and keep holding home button, when process starts then leave home button.
After sometime the process completes u see the ios 5.1.1 then activate it and get started.
[NOTE: DOWNLOAD AND USE THAT SOFTWARE AND IPSW THAT IS GIVEN IN LINK AND IF U EVERY TIMES BOOT IT THEN U NEED TO AGAIN open redsnow then extras then select ipsw then select (iPhone3,1_5.1.1_9B206_Restore.ipsw)then select just boot then press home + power , when the term is written (connected iphone 4 :recovery mode) disappears then immeditaley release power button and keep holding home button, when process starts then leave home button.
After sometime the process completes u see the ios 5.1.1 loads with your all settings that was before u reboot.]

LINKS-
iPhone3,1_5.1.1_9B206_Restore.ipsw
iPhone3,1_5.1.1_9B206_GeekGrade.ipsw
iReb R7
Redsnow(run it as admin.)
iTunes 32Bit
iTunes 64bit

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