I have one of those projectors, and I came to think about perhaps it could be possible to put Armbian on it.
Mostly just for fun. I really doubt it would be an improvement to have Linux on a projector, with most likely missing hardware decoding of codecs and other things, rather than having the original Android.
However, I haven't really found any information about the H713 chip in any of the different forums with Linux on Arm.
Have any of you any information or think that it would be a fun project? If so, please respond.