If you absolutely need Android 10 features (Dark mode, improved permissions, Live Caption), you must install a Custom ROM.
Some developers skipped Android 10 and went to LineageOS 18.1 (Android 11), but with worse performance. For the SM-T285, Android 9 (Pie) is generally considered the "sweet spot" for stability, but since you searched for "Android 10", we will focus on 10.
Fix: You forgot to flash the correct vendor patch. Some ROMs require a separate "fix.zip" found on the XDA forum thread. smt285 android 10 upd
The LineageOS 16.0 (Android 9) builds for SM-T285 are significantly more stable than Android 10. RAM management is better, and the camera sometimes works. Search for "LineageOS 16 SM-T285 XDA".
WARNING: This process voids your warranty, wipes all data, and can permanently brick (destroy) your tablet if done incorrectly. Proceed at your own risk. If you absolutely need Android 10 features (Dark
Device in Question: Users searching for "smt285" are typically looking for the Samsung Galaxy Tab A 8.0 (2019), which is officially branded with model numbers SM-T290 (Wi-Fi) and SM-T295 (LTE). The model number SM-T285 belongs to an older generation (Tab A 8.0 2017) which did not receive an official Android 10 update.
Current Software Status: The Samsung Galaxy Tab A 8.0 (2019), released with Android 9.0 (Pie), is eligible for an update to Android 10 (Q). Fix: You forgot to flash the correct vendor patch
How to Update (Official Method): If you own the SM-T290/SM-T295 model and have not yet received the update, you can check manually:
Key Features in the Android 10 Update:
Note on Model Numbers:
If you are using a specific custom ROM (unofficial software) for the older SM-T285, please specify, as official Samsung support for that device is limited to Android 7.