I've previously had success in getting 4.2, 4.3 and 4.4 apps working on a 4.1.2 rom, but now I am working on building from source I was wondering how this was done. I have the correct sdk files, and the source syncs but the build comes fails. Has anyone done this before? Am I asking the impossible?
Any help much appreciated, I am new to this all, and so far only managed to port CM10, now working on Slim3.1 before looking up the food chain.