While not the latest Android version, LineageOS 14.1 remains the most stable and reliable option for this device. It is generally considered the best "daily driver" ROM for the SM-T280, balancing speed and compatibility.
forum.xda-developers.com Search for: "Samsung Galaxy Tab A6 SM-T280" -> Look for the "Original Android Development" or "Android Development" sub-forums.
LineageOS is the gold standard for custom ROMs. The 14.1 build for the SM-T280 is your best bet for a modernized experience.
This treatise examines the landscape of custom firmware for the Samsung Galaxy Tab A6 SM‑T280 (8.0", 2016 Wi‑Fi model), evaluates notable ROMs, explains technical foundations, outlines installation and troubleshooting, and offers practical recommendations and examples. The goal is to help an experienced enthusiast choose and safely install the best custom ROM for this device while understanding tradeoffs.
Installing a custom ROM on a Samsung Galaxy Tab A6 SM-T280 is not a project for a beginner. The locked bootloader and unique Spreadtrum chipset make it a frustrating and potentially fruitless endeavor.