So I found this version. Its for some Xiaomi phones but works fine on XT
Just don't turn on anything (you can play with settings and see if it works or not)
and slo mo not working its very laggy
Use pixel 3a on back camera
and nexus 6p on front
In saturation settings you can use 2.4 and 1.6 on back and 1.0 and 1.0 on front (you can play with these settings and let me know which saturation settings is best)
You can post any link of working gcam also!