: Go back to Advanced Wipe . Check Dalvik/ART Cache, System, Cache, and Data . Do not wipe the MicroSD card or USB-OTG where your ROM file is located.
: Power off the tablet. Hold Volume Down + Home + Power simultaneously. Press Volume Up to confirm.
The Samsung Galaxy Tab E 9.6 (SM-T561), codenamed , remains a reliable legacy tablet for reading, light browsing, and media consumption. However, running modern applications on its stock Android 4.4 KitKat software is virtually impossible due to dropped app compatibility.
Ensure you are using the latest compatible TWRP recovery (codenamed gtel3g or sagit ). If the error persists, you can manually edit the updater-script inside the ROM's .zip file to remove the device-check lines. Step-by-Step Installation & Troubleshooting To ensure the cleanest installation of the 20180419 build: lineage14120180419unofficialgtel3g fix
While the 20180419 build is stable for daily use, it is over five years old. It is highly recommended to look for newer unofficial LineageOS 15.1 (Android 8.1) or Android 9/10 builds for the gtel3g to improve security patches.
This particular build was released on April 19, 2018, to provide an upgrade path for Galaxy Tab E users stuck on the official Android 4.4.4 KitKat. It is based on and offers features like split-screen multitasking and improved security patches. Common Fixes and Solutions
: Go to Settings > Developer Options and limit background processes to 2 or 3. : Go back to Advanced Wipe
Check out the official /e/OS community for alternative ROMs or the XDA-Developers thread for the latest community patches.
The April 19, 2018 unofficial build of LineageOS 14.1 for the gtel3g device brought significant performance improvements and stability to the core system. Unfortunately, it also introduced regressions related to device-specific hardware configuration files. Common Symptoms
Which (Wi-Fi, camera, or battery) are you currently trying to fix? Do you already have root access enabled on this tablet? : Power off the tablet
Unofficial builds for the gtel3g (SM-T561) often suffer from "legacy" hardware compatibility issues. Below are common fixes reported for this specific hardware branch:
The pre-installed Play Store in older GApps packages may crash or fail to connect.
: Go to Install , select your storage media, click lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip , and swipe to confirm.