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Flash Unofficial CM 10.2 custom ROM based on Android 4.3 Jelly Bean for T-Mobile Samsung Galaxy Note 2

The Unofficial CyanogenMod 10.2 test build is now available for the T-Mobile variant of the Samsung Galaxy Note 2 phablet. Use this tutorial in order to learn how to successfully update your device with this new ROM, but note that you should only test this Android 4.3-custom ROM only if you want to get a glimpse of Google’s upcoming Jelly Bean firmware update and CyanogenMod’s new features.

CM team works extensively on releasing a fully working CM 10.2 ROM based on Android 4.3 and now some developers have released a test build for you to try on your T-Mobile Galaxy Note 2 device. Here’s what how to configure your device for the updating process:

  • Use this tutorial only with the T-Mobile Samsung Galaxy Note 2 device. Do not attempt to update any other devices using the files you find in this post, as that will brick your device.
  • Your device should be factory unlocked, rooted and running CWM or TWRP Recovery images.
  • This post will work with both CWM and TWRP.
  • This unofficial Build of CM 10.2 is created by ‘teshxx’ from XDA.
  • In the tutorial you will find a step that asks you to ‘factory reset’ your device, which means that the ‘system’ partition will be deleted in the process.
  • It is highly recommended for you to create a NANDROID backup of your current OS before starting the update. This is needed as the CM 10.2 Android 4.3 ROM is a test build and it might pack some bugs and errors and you will want to restore your device to its previous OS.
  • The factory reset will not affect the contents stored on the internal SD card.
  • Backup SMS, Call logs info and APN Internet settings using the following tools for Android: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore. Root is required for some of these tools.
  • Backup your installed data files using Titanium Backup (here) or the Helyum app from Google Play Store.
  • Sync Gmail account with your Contacts info so that you will be able to restore all phone numbers after the CM 10.2 Android 4.3 Test Build ROM is installed.
  • Enable USB Debugging from Developer Options.
  • Make sure that you don’t skip any steps and that you read all the info listed in this guide. Also, use the comments field to ask for any extra help.
  • Make sure that your device’s battery charge levels are over 50%, so that it won’t power off in the middle of the updating process.
  • Note that this guide is for more advanced users, which is why we cannot be held responsible in case you brick your Galaxy Note 2 T-Mobile device. Also, we cannot be blamed if you lose any important data files.

Since you’ve read all of the above, now you can continue to the tutorial guide and learn how to successfully update your phablet with a Jelly Bean 4.3 custom ROM.

How to flash CM 10.2 Android 4.3 JB Test ROM build for the T-Mobile Samsung Galaxy Note 2:

  1. Download the CM 10.2 Test zip from here.
    > save the file on your PC or directly to your smartphone’s internal SD card without extracting the archived contents.
  2. Download Gapps for this custom Android 4.3 ROM from here.
    > save the file on your PC or download it directly to your smartphone.
  3. If you downloaded the files on your computer, then you will need to connect the Galaxy Note 2 TMO with your PC via USB Cable.
    > move both zip files on your device’s internal storage.
    > disconnect the phablet from PC when the files are copied and then power it off.
  4. Boot your T-Mobile Galaxy Note 2 into CWM / TWRP Recovery Mode.
  5. When in custom Recovery Mode, the first thing that you need to do is to create a NANDROID backup of your currently installed ROM:
    > for CWM Recovery select ‘backup and restore’ option and confirm.
    > for TWRP Recovery press Backup, then select the system files you wish to backup, then confirm.
  6. Now you need to apply ‘factory reset’ before starting the updating process:
    > CWM Recovery: select ‘wipe data/ factory reset’, then confirm.
    > TWRP Recovery: press Wipe, then Factory Reset. Confirm.
  7. Next, install the CM 10.2 Android 4.3 Custom ROM:
    > CWM Recovery: select ‘install zip from sdcard’ option, then ‘choose zip from sdcard’. Find the CM 10.2 zip file and confirm the installation.
    > TWRP Recovery: press Install, then browse your device’s internal SD card and find the ROM zip file. Confirm that you wish to install by sliding the blue button at the bottom of the screen.
  8. After the ROM is installed you should return to the main Recovery screen and repeat the actions in step 7 for the installation of Gapps zip. When this file is flashed successfully get back to the first CWM / TWRP Recovery screen.
  9. Reboot your device.
  10. Wait for the first boot process of the new ROM to complete and then take control over your device using the Google Account details.

These were all the steps that you had to take in order to successfully update your T-Mobile Galaxy Note 2 with an unofficial CM 10.2 ROM based on Android 4.3 Jelly Bean. If you didn’t manage to update your device from the first attempt, then you should repeat the entire tutorial once again. Make sure that the second time you don’t skip any steps that I have listed above.

In case you don’t like the new OS, then you can use the backup file created in step 5 to restore your Galaxy Note 2 TMO to its previous ROM. If you have any other questions, then you should post them in our comments field. Make sure to leave a detailed comment so that we will be able to find a viable solution for any problems that you might stumble upon while attempting to update your device.