I read how it is easy now to download and run older versions of iOS (especially so with iOS6) on various iDevices- most notably the iPhone5 and iPad 4. I've done so with an iPad 4, jailbroken running iOS7 and also with an iPad 2 that was running a jailbroken version of iOS9. Both now have dual boot access to iOS6. I'm curious if any others have done so and what your results are. I can tell you to confirm you don't have the "OTA demon" toggled off with iCleaner Pro as that will not allow this tweak to correctly load. If you're interested the source is, "coolbooter.com" Once loaded in your Cydia sources download the tweak and follow it's simple instructions. This won't work on the 5S or newer iPhones or the iPad Air or later.