Downgrade iOS 4.1 to iOS 4.0.1 for iPhone 4, iPhone 3GS now!

[rajan nishchal]

Downgrade iOS 4.1 to iOS 4.0.1 for iPhone 4, iPhone 3GS now!



1.This process is only for those who have already saved the ECIDs with SHSH to Cydia Server for iOS 4.0.1 or iOS 4.0.2 and we are sure that you had saved it before the official release of iOS 4.1
2.Once you update to a firmware with a new baseband, you are stuck on that baseband regardless of firmware downgrade. iOS 4.1 contains a new baseband – you will lose your carrier unlock as provided by ultrasn0w.





Steps to Downgrade iOS 4.1 to 4.0.1 iOS Firmware
Step 1: First we make a manual change to the hosts file according to the Windows operating system. Navigate to the path “c:\windows\system32\drivers\etc\” and open the hosts file in a notepad or wordpad. MAC users can navigate to the path “/etc/” and open the hosts file with TextEdit.

Step 2: At the end of file add the string “74.208.10.249 gs.apple.com” useful to redirect requests for certificates for authenticity that iTunes will make to the Saurik server. You may follow the steps below to do so.

Windows users

•Open Notepad with administrator privileges and then right click on the icon of notepad and click on “Open as administrator”
•Now that Notepad is open Go to folder C:/WINDOWS/system32/drivers/etc and open the file
•Add the following line at the end of the document and save it: 74.208.10.249 gs.apple.com
Mac users

•Navigate to Go -> Go to Folder and enter the path /etc
•Open the file hosts with TextEdit, add the following string 74.208.10.249 gs.apple.com and save the file to your desktop.
•Now return to the previous folder by following the same method and copy the text within this file by replacing the original file (If prompted for a password enter it and click OK)
Step 3: Set up your device in recovery mode.

•Turn off and unplug your device from your computer
•Now press and hold the Home button while reconnecting the USB cable to your iPhone. After iPhone is connected it should power on the device.
•Continue holding the Home button, you will see the iTunes logo appear and then finally a “Connect to iTunes” will be displayed, now is the time to release the Home button.
•Once the logo appeared in iTunes, you can release the Home button and make a normal recovery
Step 4: Now open iTunes and do a normal reset by holding down the SHIFT key (for Windows users) or Alt key (for Mac users) and clicking restore in iTunes

Step 5: Now select the original iOS 4.0.1 or iOS 4.0.2 firmware and wait for the completion.

Voila! you downgraded from firmware iOS 4.1 GM to firmware 4.0.2 / 4.0.1 and you can follow the normal guides to jailbreak firmware iOS 4.0.1 easily. It is important to note that you cannot jailbreak iOS 4.0.2.






While downgrading iOS 4.1 to iOS 4.0.1 / iOS 4.0.2 or trying to restore to custom firmware you might stuck with error 1015 in iTunes. To fix or troubleshoot error you may try the following guides:

[rajan nishchal]

Error 1015 Fix: Solving the iTunes error 1015 (Windows)


While downgrading iOS 4 to iOS 3.1.3 firmware or trying to restore to custom firmware you might stuck with error 1015 in iTunes. To fix or troubleshoot error 1015 application Error 1015 Fixer is just what you need. Here is how to solve the problem in one click!


Step 1 - Download the utility Error 1015 Fixer for Windows

Step 2 - Install LibUSB (download Link)




Step 3 – Once you get the error 1015 just start Error 1015 Fix and click on Fix My error!




Step 4 – Now click on Done! Click to exit!



Voila! Error 1015 has gone!

[ebu mohammed-emin]

use umbrella for kickout from recovery mode
but how to unlock it with modem 05.14.02 ?

[<<::GS|\/|SAGA::>>]

Originally Posted by ebu mohammed-emin

use umbrella for kickout from recovery mode
but how to unlock it with modem 05.14.02 ?

can any person say new firmware 4.1 modem 05.14.02 can possible to unlock or wait ?

[dragosgsm]

Originally Posted by sultansaga

can any person say new firmware 4.1 modem 05.14.02 can possible to unlock or wait ?

I think it's not unlockable yet...

[exstazi]

Originally Posted by rajan nishchal

Downgrade iOS 4.1 to iOS 4.0.1 for iPhone 4, iPhone 3GS now!



1.This process is only for those who have already saved the ECIDs with SHSH to Cydia Server for iOS 4.0.1 or iOS 4.0.2 and we are sure that you had saved it before the official release of iOS 4.1
2.Once you update to a firmware with a new baseband, you are stuck on that baseband regardless of firmware downgrade. iOS 4.1 contains a new baseband – you will lose your carrier unlock as provided by ultrasn0w.







Steps to Downgrade iOS 4.1 to 4.0.1 iOS Firmware
Step 1: First we make a manual change to the hosts file according to the Windows operating system. Navigate to the path “c:\windows\system32\drivers\etc\” and open the hosts file in a notepad or wordpad. MAC users can navigate to the path “/etc/” and open the hosts file with TextEdit.

Step 2: At the end of file add the string “74.208.10.249 gs.apple.com” useful to redirect requests for certificates for authenticity that iTunes will make to the Saurik server. You may follow the steps below to do so.

Windows users

•Open Notepad with administrator privileges and then right click on the icon of notepad and click on “Open as administrator”
•Now that Notepad is open Go to folder C:/WINDOWS/system32/drivers/etc and open the file
•Add the following line at the end of the document and save it: 74.208.10.249 gs.apple.com
Mac users

•Navigate to Go -> Go to Folder and enter the path /etc
•Open the file hosts with TextEdit, add the following string 74.208.10.249 gs.apple.com and save the file to your desktop.
•Now return to the previous folder by following the same method and copy the text within this file by replacing the original file (If prompted for a password enter it and click OK)
Step 3: Set up your device in recovery mode.

•Turn off and unplug your device from your computer
•Now press and hold the Home button while reconnecting the USB cable to your iPhone. After iPhone is connected it should power on the device.
•Continue holding the Home button, you will see the iTunes logo appear and then finally a “Connect to iTunes” will be displayed, now is the time to release the Home button.
•Once the logo appeared in iTunes, you can release the Home button and make a normal recovery
Step 4: Now open iTunes and do a normal reset by holding down the SHIFT key (for Windows users) or Alt key (for Mac users) and clicking restore in iTunes

Step 5: Now select the original iOS 4.0.1 or iOS 4.0.2 firmware and wait for the completion.

Voila! you downgraded from firmware iOS 4.1 GM to firmware 4.0.2 / 4.0.1 and you can follow the normal guides to jailbreak firmware iOS 4.0.1 easily. It is important to note that you cannot jailbreak iOS 4.0.2.






While downgrading iOS 4.1 to iOS 4.0.1 / iOS 4.0.2 or trying to restore to custom firmware you might stuck with error 1015 in iTunes. To fix or troubleshoot error you may try the following guides:

why even bother same downgrade method every time a new FW is released...its has been the same gowngrade method for a few months ...just reposting and changing the version aint doing any better