Samsung Galaxy S3 Android 6.0, CM13 Custom ROM Download

Samsung Galaxy S3 receives android 6.0 Marshmallow -thanks to Android Open Source Project. The second custom ROM based on Android 6.0 Marshmallow for the Samsung Galaxy S3 has also made its way to the developments floor.

This second ROM is CyanogenMod 13, which has a lot more features and it is more stable for this low-end-phone for which you might doubt android 6.0, Marshmallow would ever be available. The CyanogenMod 13 is based on the latest CM sources and features Android 6.0.1 Marshmallow on board, which is an update over the for Android 6.0 version.

What's Working in the ROM, CM13 for Galaxy S3:

  • Basic 2D graphics
  • WiFi and Hotspot
  • Audio and microphone
  • SMS, MMS
  • Mobile data (RIL, 3G, LTE)
  • GPS, NFC, MTP and other connectivity

What's Not Working or Buggy:

non-FAT32 SD cards
WiFi P2P.


1. Download both required files, the CyanogenMod 13 Android 6.0.1 Marshmallow ROM and Marshmallow Gapps for the Samsung Galaxy S3. Move both files to the internal storage of your Samsung Galaxy S3.

2. Turn your Galaxy S3 off and boot into recovery mode.
You should have custom recovery flashed already. See here: How to Flash Custom Recovery On Samsung Android Devices.
How to Boot Samsung Android to RecoveryPress and hold the volume up, home and power keys at the same time.
3. Once in recovery, make a full Nandroid backup.
The is a must in case you ever wish to go back to your previous ROM.

4. Wipe data, cache and delvik cache.

5. Flash CM13 ROM and then flash Marshmallow Gapps.
To flash the ROM, select Install and then, navigate to the folder where the ROM is located. The same process goes for the GApps.

Reboot your phone and enjoy Android 6.0.1 on your Samsung Galaxy S3.

Credit: forkbomb444