1. Install the ROM Manager on your T-Mobile myTouch 4G. Get it from Google Play Store, afterward install the clockwork mod recovery.
2. Connect your T-Mobile myTouch 4G to your PC employing the USB in a row cable. Copy the “ROM.Zip” sand you downloaded to the SD recall license.
3. Restart your device in the recovery mode using ROM Manager. Equally soon as in Recovery Mode, get to ROM Manager and elite backup / restore to back-up your in a row.
4. From the Recovery Menu sort out a tote up data erase (including Delvik Cache). When done, get back to Recovery Principal Menu and desire Flash ROM from SD Card. Navigate the location you commonplace the ”ROM.Zip” sand and hunt the instructions used for installing Android 4.4 KitKat on your T-Mobile myTouch 4G. Equally soon as the installation is terminated, right reboot your T-Mobile myTouch 4G device, and now you get, you’ve right upgraded it to the new to the job Android 4.4 KitKat
Upgrade T-Mobile myTouch 4G to Android 4.4 KitKat.
Note: Here Is Link To Download the File ROM =