How to Downgrade iPod Touch 3G/2G 3.1.3 to 3.1.2 OS

Once you have mistakenly upgraded to un-jailbreakable iPhone & iPod Touch firmware
version your headache starts. Recently released iPhone OS 3.1.3 Baseband 05.12.01 is yet to be jailbroken and unlocked but iPhone Dev team’s PwnageTool 3.1.5 is available for download to upgrade your iPhone & iPod Touch to OS 3.1.3 without upgrading baseband there by retaining capability to jailbreak & unlock.

We have also covered how to Unlock iPhone OS 3.1.3 using Ultrasn0w also how to downgrade iPhone 3.1.3 to 3.1.2 for iPhone 3G using Fuzzyband. Now those iPod Touch 3G users stuck with OS 3.1.3 here is complete step by step working guide to downgrade iPod Touch 3G 3.1.3 to 3.1.2.
How to Downgrade iPod Touch 3.1.3 to 3.1.2 OS

1. Download Original iPod Touch 3.1.2 IPSW file

Check in below location on Windows (C:/Users{your windows user name}/AppData/Roaming/Apple Computer/iTunes/iPod Software Updates)

2. Make sure that your iPod Touch 3G is not connected to the PC/Mac

3. Now Power Off Your iPod Touch 3G

4. Now hold the home button. Keep holding it for 10 seconds and then connect your iPod touch to PC/Mac while holding the Home button.

5. If you see the “Connect to iTunes” message on your iPod touch then it means you are now in recovery mode:

6. Once in recovery mode. Click on iPod Touch Device on iTunes Sidebar and press Shift + Click on restore button will be prompted open firmware location. Give it the locations where your firmware 3.1.2 is located and click OK.

After you see iTunes message of restoration successful you are back to firmware 3.1.2 and can jailbreak once again.