Originally Posted by
Windows Central Question I have Microsoft Lumia 535. I want to go back to windows 8.1 from windows 10. I tried a hard reset with the volume down and power button thing, the reset took place but it came back to windows 10? Shouldn't it have come back to windows 8.1? I did the factory reset again, and the same thing happened.
You can't get a reversion by Hard Reset or Factory Reset. It simply reflashes the current OS version you are using.
Did you ever do a registry hack to impersonate another device? That might account for the ffu signing error. In that case revert your registry to the original settings.
OR
There are two brute force methods to look at...
This one is probably best:
http://www.lumiafirmware.com/ Check the tutorial for details...
This one is more of a step by step override and looks to be a PITA:
https://stebet.net/how-to-install-a-...ecovery-tools/
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