Firmware update / Stock ROM : Samsung Galaxy Tab E Black SM-T378L to Android 6.0.1 Marshmallow. The firmware available for downloading https://www.sammobile.com/firmwares/galaxy-tab-e-black/SM-T378L/. You can download your Samsung Galaxy Tab E Black SM-T378L firmware at the page, available for some countries. If you get error message “SECURE CHECK FAIL: BOOTLOADER” when flashed the ROM, try to • Read More »