this all started when i updated to the latest weekly: it was fine but i couldn't edit build.prop and enable the navbar, which I absolutely need because the hardware keys are broken. Not being able to edit a system file while being rooted already seems strange. I decided to go back to 8.1.3 stable, with no results. Then I flashed the latest china stable, then the latest china dev through DNX fastboot as to the guide there. After this I couldn't neither open recover nor fastboot but I fixed that. Then i went back to the xiaomi.eu builds but now every time I try to flash supersu 2.46 (the version recommended on the download thread that worked before), when I reboot i don't see any supersu app, and when downloading it, it says binaries not installed. I tried factory reset, fixing permissions and contexts, and system is r/w in twrp. UPDATE: formatting system brought me back to the beginning: I seem to have root, when i reboot i can see the changes i made with a root browser, but they don't affect the system:apps that i put i system/app don't show up, no navbar... It's like it's loading a copy of the system, but this is mi pad 2, it doesn't have two system partitions like the first!