
Samsung Galaxy Tab A 8.0
The latest firmware for Samsung Galaxy Tab A 8.0 (SM-T355Y) is T355YDOS1CTJ2 with Android 7.1.1 (Nougat), released on December 8, 2020 for 4 regions (CSC). Every official firmware build for SM-T355Y, 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/T355YDOS1CTJ2
SM-T355Y started on Android 5 and has received 2 major Android upgrades; it now runs Android 7.1.1 (Nougat). The newest build, T355YDOS1CTJ2, was released on December 8, 2020 with the August 2017 security patch. No new build has appeared for 71 months, so regular updates for this model have most likely ended.
· The security of your device has been improved.
Box codes of SM-T355Y for different colors and markets. Firmware is chosen by the model code SM-T355Y and your region (CSC), not by the SKU.

SM-T290N

SM-T537A

SM-T800X

SM-T807V

SM-T230X

SM-T230NY

SM-T237V

SM-T232
The newest firmware for SM-T355Y runs Android 7.1.1 (Nougat): build T355YDOS1CTJ2, released on December 8, 2020.
The latest build for SM-T355Y, T355YDOS1CTJ2, was released on December 8, 2020 (5 years ago).
SM-T355Y has had no new firmware for 71 months, so regular updates have most likely ended.
Yes, all firmware files for SM-T355Y are 100% official, original, and obtained directly from Samsung servers.
To flash SM-T355Y, 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-T355Y.