
Samsung Galaxy Tab A 8.0
The latest firmware for Samsung Galaxy Tab A 8.0 (SM-P355) is P355XXS1CTJ1 with Android 5.0.2 (Marshmallow), released on November 17, 2020 for 11 regions (CSC). Every official firmware build for SM-P355, 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/P355XXS1CTJ1
All 12 builds in our database run Android 5.0.2 (Marshmallow). The newest build, P355XXS1CTJ1, was released on November 17, 2020 with the August 2017 security patch. No new build has appeared for 72 months, so regular updates for this model have most likely ended.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
Box codes of SM-P355 for different colors and markets. Firmware is chosen by the model code SM-P355 and your region (CSC), not by the SKU.

SM-P355Y

SM-P555Y

SM-P550

SM-P580X

SM-P588C
The newest firmware for SM-P355 runs Android 5.0.2 (Marshmallow): build P355XXS1CTJ1, released on November 17, 2020.
The latest build for SM-P355, P355XXS1CTJ1, was released on November 17, 2020 (5 years ago).
SM-P355 has had no new firmware for 72 months, so regular updates have most likely ended.
Yes, all firmware files for SM-P355 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-P355, 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-P355.