Here’s we will post all currently developed and available Custom ROMs for Xiaomi Mi Max 2. These are mainly Android 7.1.2 ROMs with a tons of custom options. To flash these ROMs you’ll need to have unlocked bootloader and TWRP Custom Recovery installed on your phone.
Download and install Custom ROMs on Xiaomi Mi Max 2
To install GAPPS you’ll need to visit http://opengapps.org/ and select the version for your device and then flash downloaded archive with Google Apps right after Custom ROM installation without rebooting into system.