Xiaomi has begun rolling out MIUI 7 beta, which users can now download and install on a supported Xiaomi device. This includes the Mi 3, Mi 4, Mi 4i, Redmi 2, Redmi 1S, Redmi Note 3G and Redmi ...

You can get the platform tools for Windows, Linux, or Mac direct from Google's servers. You get a ZIP file containing the platform tools folder with ADB, fastboot, and a few other tools.