[Question] How can i downgrade iPhone 5 to IOS 8.4.1?

I stumbled across this comment a long time ago and it worked for me. Although the user had bad English it worked on my first try:

I tested this method is running okay but is not like official update is change IP address MAC address so The going very unstable For those want to update to iOS 8.4.1 iPhone 5.2 from iOS 10.3.3 the fucking best method working 100% Is from filza go to system/library/coreservices scroll down to systemVerison.plist click on click root change productverison change it to iOS 6.0.1 turn back click on productbuildverison change it to 10A525 turn back saved close filza go setting erase all data then go to update to iOS 8.4.1 then active your phone no need to change MAC address

Enjoy my discovery

/r/LegacyJailbreak Thread