Update Galaxy Tab 3 8.0 to Android 6.0.1 Marshmallow via CyanogenMod 13 Custom ROM

Galaxy Tab 3 8.0 runs on Android 4.4.2 KitKat and the device won’t be getting any higher version of Android. Samsung hasn’t announced any plans to provide any update for the Tab 3. In case you own this device and now you’re wishing to try some new software on it, then the use of a custom ROM maybe the best choice for you. Custom ROMs have always proved out to be the best choice for the device which have been forgotten by the device manufacturers. You can easily update your device to the latest possible version of Android if you’re lucky enough to get a custom ROM. The good news is, Galaxy Tab 3 8.0 owners happen to be really lucky.

XDA recognised contributor gr8nole has brought us the unofficial build of CyanogenMod 13.0 based on Android 6.0.1 Marshmallow. This ROM works with all variants of Galaxy Tab 3 8.0 including SM-T310, SM-T311 & SM-T315. The ROM is in very early development stages. A lot of features are expected to crash so flash it only if you’re willing to have a look and feel of Marshmallow on your Galaxy Tab 3. This ROM may not be kept as a daily driver at all. Follow the instructions listed below carefully to avoid any mishap. Let’s have  a look on some precautions and then upgrade our beloved Tab 3 8.0 T310, T311 and T315 to Android 6.0.1 Marshmallow CyanogenMod 13 custom ROM.nexusae0_GALAXY-Tab-3-8-inch-1


  1. This ROM is intended for Galaxy Tab 3 8.0 T310, T311. Do not try flashing this ROM on any other device otherwise you will result in bricking it. Check your device’s model number under settings > about device.
  2. Charge your phone up to 50% to avoid any power issues during the flashing process.
  3. Flash a custom recovery on your Galaxy Tab 3 8.0 T310, T311.
  4. Backup everything including your important contacts, call logs and text messages.
  5. Don’t forget to create a Nandroid backup. This is highly recommended so that you can revert back to your previous system in case of a mishap.
  6. Backup EFS partition to avoid EFS corruption later on.
  7. Follow the instructions to the letter.

Disclaimer: Flashing custom ROMs voids the warranty of a device and its not recommended officially. While you’re going to do this, make sure that you’re doing this at your own risk. In case of a mishap TechBeasts, Samsung or the device manufacturers may not be held responsible.

How To Update Galaxy Tab 3 8.0 to Android 6.0.1 Marshmallow via CyanogenMod 13 Custom ROM

  1. Download latest CyanogenMod 13.zip file according to your device
    1. CyanogenMod 13 Android 6.0.1.zip file
  2. Download Gapps.zip [arm, 6.0.zip] file for Android 6.0.1 Marshmallow.
  3. Connect your phone to your PC now.
  4. Copy all .zip files to the storage of your phone.
  5. Now disconnect your phone and turn it off complete.
  6. Boot into TWRP recovery now, in order to do so, turn it on by pressing and holding Volume Up + Home Button + Power Key. You should see the recovery mode in a while.
  7. Now in TWRP  recovery, wipe cache, factory data reset and advanced options > dalvik cache.
  8. After wiping all these three, select “Install” option.
  9. Now select “Install > Choose Zip from SD card > Select cm-13.0…….zip file > Yes”.
  10. This will flash the ROM in your phone, once done get back to the main menu in recovery.
  11. Now once again select “Install > Choose Zip from SD card > Select Gapps.zip file > Yes”
  12. This will flash the Gapps in your phone.
  13. Reboot your device.
  14. You should see the Android 6.0.1 Marshmallow CyanogenMod 13.0 running on your device in a while.
  15. That’s all!

First boot may take up to 10 minutes, you may not worry if it’s taking that much long. In case it’s taking too long, you may boot into TWRP recovery and wipe cache and dalvik cache and reboot your device as it may fix the issue. In case your device is having issues, you may return to your old system using the Nandroid backup or follow our guide here to install stock firmware.

Got any queries? Reach us out through the comment box below.


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  • poul

    good work for my SM-T315 working perfectly ,thanks a lot

  • Manoj Dhar

    Great!!! it worked for my SM-T311 but the upgrade is draining the battery quite fast… Earlier i had to charge my device once a week but now every 36hrs.. is this expected?


  • Aizen Sousuke

    This rom too laggy and sluggish

  • Ingvars_V

    My SM-T310 is on the booting screen for an hour now and the CPU is pretty hot. I did wipe the dalvik cache and the cache before this (second) try of powering on. Any tips before I install the official rom?

    • @Ingvars_V:disqus Just install the official ROM and perform a factory data reset, it should be all well.

  • Sravanesh

    it takes long one whole night yet still at the loading page tried it number of times still the same

  • Sravanesh

    finally started after 10th time

  • Sravanesh

    gapps is not working properly

  • Gshcofie

    Very nice rom, easy instructions, worked first time no hassles on my T310, no long wait times or any of the problems below.

  • YanSen

    Haven’t tried yet but is it ok not to install the GAPPS file. Seems like a huge file to download.

    • You can also download a smaller gapps file such as pico or micro package.

      • YanSen

        Thanks for the prompt reply. I had noticed the smaller gapp files only much later. I was hoping to install play store only to download apps. So would the pico gapp have it? Or is it advisable to use micro to avoid missing apps that may be needed to work in tandem with the play store?

        • @disqus_SB2KLPYeVy:disqus Yes, Pico would have it and it’s good enough to perform the everyday tasks with gapps. Best of Luck.

  • mr.amazing 18

    does it contain any virus bro i heard it doesn’t work on 4.4.4

    • @mramazing18:disqus Still need help? I was away from the site for days. Just got back. Apologies for late response.

  • Syeda Zaidi

    I am gonna try this on my device. Approximately how long would it take? and what if I reset the device prior to turning it off? Does it matter?
    Also, would it be helpful for the better functioning of the tab?
    Any drawbacks or risks?

  • @disqus_hMYSdTDQ17:disqus 10-15 minutes.
    Backup everything before going ahead.
    yes reset the device before flashing the new ROM.
    Can’t say anything about the functionality, this ROM is supposed to give you the upgraded version of Android.

    Since this is a custom ROM, you are completely on your own.

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