This is an of LineageOS 14.1—a custom Android distribution that succeeds the legendary CyanogenMod project. The naming convention tells you everything you need to know:
This error occurs because TWRP is enforcing signature verification. Either:
To ensure a clean system configuration, would you like the to the corrected TWRP recovery images or the alternative LineageOS 15.1 package for the gtel3g hardware variant? Share public link
Once you have applied the "lineage14120180419unofficialgtel3g fix", the device will be usable but slow. Here is how to optimize it:
The installation procedure for the 15.1 build mirrors the 14.1 methodology but cuts system loading delays substantially, transforming the Samsung Galaxy Tab E 3G into a highly functional media device. lineage14120180419unofficialgtel3g fix
Go to , select the lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip archive, and flash it.
While this specific April 2018 build is an older release, it is part of a community effort to maintain and improve the "gtel3g" variant. Key Build Information Target Device: Samsung Galaxy Tab E 9.6 (3G/SM-T561) , codenamed Android Version: 7.1.2 Nougat (LineageOS 14.1). Release Type: Unofficial. Common Issues and Fixes
Go to Settings > Developer Options > Limit background processes to 3-4 to keep the system responsive. Phase 3: Moving Beyond the 2018 Build (Recommended)
Disclaimer: Flashing custom ROMs can result in a bricked device. Perform all actions at your own risk. This is an of LineageOS 14
: Essential for any custom ROM installation.
1. Fixing Signature Failures (Error 21 / Zip Verification Failed)
The "lineage-14.1-20180419-UNOFFICIAL-gtel3g" fix refers to a custom ROM build specifically for the Samsung Galaxy Tab E 9.6 (SM-T561)
You will need:
This troubleshooting guide outlines the steps to bypass common installation errors and successfully flash the ROM. Prerequisites for Flashing
Are you tired of experiencing issues with your LineageOS 14.1 20180419 unofficial GTE LTE 3G device? Look no further! This comprehensive guide is specifically designed to help you troubleshoot and fix common problems that may arise on your device.
The camera fails to connect or forces a reboot.