
Samsung Galaxy Note 10.1
The latest firmware for Samsung Galaxy Note 10.1 (GT-N8020) is N8020XXBMJ1 with Jelly(Android Bean), released on October 24, 2013 for 1 region (CSC). Every official firmware build for GT-N8020, 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/N8020XXBMJ1
All 33 builds in our database run Android 4.1.2 (Jelly Bean). The newest build, N8020XXBMJ1, was released on October 24, 2013. No new build has appeared for 158 months, so regular updates for this model have most likely ended.

GT-N7000B

GT-N5105

GT-N8013

GT-N8005

GT-N7108D
The newest firmware for GT-N8020 runs Android 4.1.2 (Jelly Bean): build N8020XXBMJ1, released on October 24, 2013.
The latest build for GT-N8020, N8020XXBMJ1, was released on October 24, 2013 (13 years ago).
GT-N8020 has had no new firmware for 158 months, so regular updates have most likely ended.
Yes, all firmware files for GT-N8020 are 100% official, original, and obtained directly from Samsung servers.
To flash GT-N8020, 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 GT-N8020.