Yeah, I miss that ability to experiment. On my Nexus 7 2013, I must have tried 5 different builds and custom roms of Android and countless re-installs of MM. But if you bought the ZenPad 3S 10, you're stuck with a single build (MM 6.0) and it's not even the latest revision of MarshMallow (6.0.1). Otherwise it's a pretty decent tablet, which I like to use for gaming as an alternative to the Nvidia Shield. I am disappointed by its gaming performance on certain AAA titles, however, like the last two Asphalt titles using non-PowerVR versions which for some reason run so choppy on this device that they're pretty much unplayable, and older titles like The Cave (playable but stutters very noticeably during cache loads). All other games I've tried, including most racing ones, play fine. I'd love to play around a bit and see if it's the MarshMallow 6.0 build and test how they play under KitKat 4.4.4 but., alas, impossible without any ability to flash older versions of android.