Micromax YU Yureka is not working properly after upgrading. When we place a call, the screen goes blank and I'm not able to receive or decline the call.
I want to downgrade to KitKat, how to do it?
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I am also a Yureka YU user and am extremely satisfied with AospExtended(LineageOS is also good but hasn't released Oreo yet). I have encountered zero bugs till now and Aosp's Telegram support is also very helpful.
Though this doesn't answer your issue, it's simply an advice for you from my end(because I have been in your shoes). I also experienced some faults in Cyanogen which are now completely gone thanks to these ROMs.