Update Gionee M3 to Marshmallow Android 6.0.1 via CyanogenMod 13. Gionee M3 is a traditional device so now didn’t receive the Marshmallow update but we can Download and Install CM13 ROM for Gionee M3, which is based on latest Marshmallow 6.0. CM13 is a most popular custom ROM for Android devices which bring some features on your device which doesn’t found on stock Android. Download CynogenMod 13 ROM for Gionee M3 to get features like battery optimizations, Doze, better App permissions, Now on Tap, Status bar customization and much more.
if we need Marshmallow based ROM then Download and Install CM13 ROM for Gionee M3. To Download CM13 ROM for Gionee M3, all we need is Rooted phone with custom recovery installed, ROM zip file and GApps zip file.

Note:

• This ROM is only for Gionee M3 so don’t try this on any other device.
• It will erase all your data, so we advise you first to take a complete backup of your phone and then proceed.
• Make sure that your phone has at least 50-60% charged to prevent the accidental shutdown in-between the process.

Files required to install CynogenMod 13 ROM on Gionee M3:

• Download Gionee M3 CM 13 ROM – ROM

• Patch  

• Download Gapps for Gionee M3
• Check Best CM 13 Themes

Steps to Download and Install CM13 ROM for Gionee M3:

STEP 1:Download and install a custom recovery. If you already had a custom recovery installed on your device, then skip this step.

STEP 2:Download the CM13 ROM and Gapps file and save it on your device.

STEP 3:Now Boot your device into recovery mode by press and hold “Volume Down+Power Button”

STEP 4: In this step, you will enter into recovery mode. Now in TWRP, create a Nandroid backup (Recommended) of your device for safer side.

STEP 5:Now do a Factory Reset by Goto Wipe>Advanced Wipe>Select Wipe cache, Dalvik cache, System, and data and swipe to confirm it.

STEP 6:Now, Go to Install and locate the ROM zip file & swipe to Install the ROM file. After the process completes, Flash the GApps zip file.

STEP 7:Now wipe cache & Dalvik cache again and Reboot your device.

STEP 8:CM13 ROM for Gionee M3 has been successfully installed.