
Samsung Galaxy Tab A 8.0
The latest firmware for Samsung Galaxy Tab A 8.0 (SM-T387V) is T387VVRU3CUI2 with Android 10, released on October 20, 2021 for 1 region (CSC). Every official firmware build for SM-T387V, newest first: one row per build with all regions (CSC) that received it.
Each firmware build has its own page at https://samfirm.shop/build/{PDA}, where {PDA} is the build number from the list above. Example: https://samfirm.shop/build/T387VVRU3CUI2
SM-T387V started on Android 8 and has received 2 major Android upgrades; it now runs Android 10. The newest build, T387VVRU3CUI2, was released on October 20, 2021. No new build has appeared for 61 months, so regular updates for this model have most likely ended.
Specifications of SM-T387, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-T290N

SM-T537A

SM-T800X

SM-T807V

SM-T230X

SM-T230NY

SM-T237V

SM-T232
The newest firmware for SM-T387V runs Android 10: build T387VVRU3CUI2, released on October 20, 2021.
The latest build for SM-T387V, T387VVRU3CUI2, was released on October 20, 2021 (5 years ago).
SM-T387V has had no new firmware for 61 months, so regular updates have most likely ended.
Yes, all firmware files for SM-T387V are 100% official, original, and obtained directly from Samsung servers.
To flash SM-T387V, you need to download the appropriate firmware, put your device into Download Mode, and use the Odin tool to load the BL, AP, CP, and CSC files.
Downgrading is only possible if the bootloader version (binary bit) of the old firmware matches the current one. Always check the binary version before flashing SM-T387V.