No, no - it doesn't work like that, for testing you don't add the channel with vanity code - you have to
side-load the ZIP instead to be able to see diagnostics in the console!
Be methodical, do that before painting conclusions with a broad brush ("it does not show in the list because it is built using OS 7.5 functions that are not available in 7.2.2 version" - i heard you speculating the first time but if that's the case, there'd be evidence exceptions in the console).