Disclaimer; this site and its developers are not responsible if you should brick your device in the process of flashing this custom ROM, ensure you are conversant with flashing of custom ROMs and also using SP flash tool before you carry out this process.
Screenshots from CyanogenMod12.1 custom ROM on gionee M5 mini
Features of CyanogenMod12.1 custom ROM on Gionee M5 Mini-pre-installed themes
-ability to freeze apps you don't use
-Gapps fully supported
-USB OTG working
-and lots more...
-Download Cam fix
How to flash CyanogenMod12.1 on Gionee M5 mini-Before we begin make sure you have TWRP/CWM installed on your Gionee M5 mini, after which you then proceed to download the ROM provided in the link below.
-After which, move the downloaded files to the root of your SD card (by root of SD card, we mean in no folder at all)
-Then turn off your device and boot it into recovery mode. by pressing and holding power button + volume up simultaneously for 5secs.
-Once in recovery mode, wipe then swipe to wipe only
-After which you go back to the recovery main menu and click "Install", now navigate through your SD card to locate the the ROM, once seen you then swipe to begin installation.
-Once you are done flashing, go back and flash gapps, after flashing go back and flash the cam fix, once done, go back to the recovery menu and click on reboot, first reboot takes up to 8mins.
Congratulations! you have successfully flashed CyanogenMod12.1 custom ROM to your Gionee M5 Mini.
ROM credits; Swiss carter