Jailbreak your iPod on iOS 9.3.5/9.3.6 (using Ph0enix or Kok3shi9). Add the repo
However, there is a critical caveat:
: Use the CoolBooter app whenever you want to switch to the iOS 6 partition. Option 2: Tethered Downgrade with Legacy iOS Kit downgrade ipod touch 5 to ios 6
But here is the catch: for the iPod touch 5. That means you cannot simply press "Restore" in iTunes. You must use specialized tools to perform a tethered downgrade . Jailbreak your iPod on iOS 9