change the device model

hey there every body!
since i upgrade my mx3 to android 5.0.1 i cant download some sort of local apps and some random app as well.
i wondered if is it possible to change the build.prop (with build prop editor ) and change the device model on THIS phone cause i know many other can change but i dont know the consequence on this specific phone.

and if i can change the device model (and i think i need to change baseband as well) do you got something to recommend me to change to?

By the way - this is not in the mx3 forum cause it seems to be dead so i wrote it here in a place that some will see :)

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