The only downside about Android OS updates is that Google doesn’t send them to devices that reached a certain age and unfortunately the Xiaomi Mi Max is among those devices, but that shouldn’t be something to worry about since the new OS update can be manually installed by using a custom Cyanogen ROM.
Users should know that they need to backup their data because the ROM installation process requires users to delete all of their files. Also, another thing to keep in mind is that the device must have at least 80 percent of battery life before the installation process can start.
Xiaomi Mi Max
The first step the user is required to take is to enable USB debugging form the device’s settings menu. In order to do that the user has to tap on the MIUI version seven times in a row and the advanced settings panel will pop up from which the USB debugging option can be enabled. The user can now go ahead and download the portable adb zip file on the phone and extract it on a desktop via USB. After doing that, the user can download the TWRP custom recovery image file and duplicate it in the previously extracted adb file. Also, do not forget to download the custom ROM and GApps package on a desktop.
Now that the Mi Max device has been connected to the PC via USB, the user can start up the MAF32 file and a command window prompt will pop up in which the user needs to paste the adb commands (adb devices, adb reboot recovery).
The device should automatically restart into bootloader mode now and once in the bootloader mode, the user has to process the flash recovery twrp-3.0-3-hydrogen-black-blue.img. After doing that, the device will automatically boot into the operating system mode from where the user can head over to the CyanogenMod CM14.1 Android 7.1 Nougat and GApps package then copy them on the device using the MAF32 file and reboot the phone in recovery mode once again.
The only thing left to do is to Wipe the device’s data and install the CyanogenMod 14.1 ROM and the device will run on the latest Android OS.