
Samsung Galaxy Tab A (2016) with S Pen
The latest firmware for Samsung Galaxy Tab A (2016) with S Pen (SM-P585N0) is P585N0KOS1CTH7 with Android 7.0 (Nougat), released on October 12, 2020 for 1 region (CSC). Every official firmware build for SM-P585N0, 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/P585N0KOS1CTH7
All 8 builds in our database run Android 7.0 (Nougat). The newest build, P585N0KOS1CTH7, was released on October 12, 2020. No new build has appeared for 73 months, so regular updates for this model have most likely ended.
Specifications of SM-P585NZKAXFA, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.

SM-P580X

SM-P610X

SM-P620

SM-P605V

SM-P605L

SM-P605K

SM-P625

SM-P907A
The newest firmware for SM-P585N0 runs Android 7.0 (Nougat): build P585N0KOS1CTH7, released on October 12, 2020.
The latest build for SM-P585N0, P585N0KOS1CTH7, was released on October 12, 2020 (6 years ago).
SM-P585N0 has had no new firmware for 73 months, so regular updates have most likely ended.
Yes, all firmware files for SM-P585N0 are 100% official, original, and obtained directly from Samsung servers.
To flash SM-P585N0, 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-P585N0.