Flashing checklist (generalized)

: This part of the string represents the build date of the LineageOS version, formatted as YYYYMMDD. Therefore, 20180419 translates to April 19, 2018. This specificity indicates that the software in question is from a particular snapshot of the LineageOS codebase on that date.

: Indicates that this specific version likely contains manual fixes (patches) for bugs typical in older custom ROMs, such as camera functionality or security updates. Device Compatibility This software is intended strictly for the Samsung Galaxy Tab E 9.6 (SM-T561)

For (which is based on Android 7.1 Nougat), you need an ARM64 GApps package.

Are you looking for a "patched" version that includes custom performance tweaks or fixes for specific hardware bugs (like camera or Bluetooth) common in unofficial gtel3g builds?

For users seeking to upgrade their aging , the unofficial LineageOS 14.1 (build 20180419-unofficial-gtel3g ) remains a popular, though legacy, choice for moving beyond the stock Android 4.4.4 KitKat. ROM Overview: LineageOS 14.1 for gtel3g