Galaxy Tab S6 5G SM-T866N updates & firmware

This page tracks every software update Samsung's update servers list for the Samsung Galaxy Tab S6 5G (SM-T866N). The latest stable build is T866NKOU5DXE1 (Android 12, feature update), first released on Jun 3, 2024. Samsung has published 23 stable builds for this model since Jan 27, 2020: 4 security and 19 feature updates, from Android 9 to Android 12. The current bootloader (binary) version is 5. A device on bit 5 only accepts firmware with bit 5 or higher – see downgrading and the bootloader bit.

Rollout: build T866NKOU5DXE1 (Android 12 (One UI 4)) is live in all 1 regions, first released on Jun 3, 2024 in KOO (South Korea).

Latest build: T866NKOU5DXE1
Released: Jun 3, 2024
Android: Android 12
Bootloader bit: 5
Regions: 1
Stable builds: 23

Update policy

The Galaxy Tab S6 5G no longer receives updates: the last firmware appeared on Jun 3, 2024, on Android 12 (One UI 4).

Compare all models: Samsung update policy by model.

Latest firmware by region (CSC)

Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.

CSC	Region	Latest build	Android	Released	Builds
`KOO`	South Korea	`T866NKOU5DXE1`	Android 12	Jun 3, 2024	23

Firmware history (23 builds)

Every stable build (PDA version) Samsung has published for the SM-T866N, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).

Build (PDA)	Released	Android	Type	Bit	Regions	File
`T866NKOU5DXE1`	Jun 3, 2024	Android 12	Feature	5	1	on server
`T866NKOS5DWH5`	Aug 30, 2023	Android 12	Security	5	1	on server
`T866NKOU4DWC3`	Apr 2, 2023	Android 12	Feature	4	1	on server
`T866NKOU4DVH2`	Sep 13, 2022	Android 12	Feature	4	1	on server
`T866NKOU4DVG5`	Aug 3, 2022	Android 12	Feature	4	1	on server
`T866NKOU4DVE1`	May 18, 2022	Android 12	Feature	4	1	on server
`T866NKOU4DVD1`	Apr 19, 2022	Android 12	Feature	4	1	on server
`T866NKOS4CUL1`	Dec 20, 2021	Android 11	Security	4	1	on server
`T866NKOU4CUK1`	Nov 23, 2021	Android 11	Feature	4	1	on server
`T866NKOU4CUI5`	Oct 6, 2021	Android 11	Feature	4	1	on server
`T866NKOS3CUG1`	Aug 10, 2021	Android 11	Security	3	1	on server
`T866NKOU3CUE1`	May 25, 2021	Android 11	Feature	3	1	on server
`T866NKOU3CUC3`	Apr 15, 2021	Android 11	Feature	3	1	on server
`T866NKOU3CUC1`	Mar 19, 2021	Android 11	Feature	3	1	on server
`T866NKOS3BUA1`	Jan 13, 2021	Android 10	Security	3	1	on server
`T866NKOU3BTK2`	Dec 2, 2020	Android 10	Feature	3	1	on server
`T866NKOU3BTJ2`	Oct 14, 2020	Android 10	Feature	3	1	on server
`T866NKOU3BTI2`	Sep 14, 2020	Android 10	Feature	3	1	on server
`T866NKOU2BTF1`	Jun 17, 2020	Android 10	Feature	2	1	pulled
`T866NKOU1BTD1`	Apr 15, 2020	Android 10	Feature	1	1	pulled
`T866NKOU1ASL2`	Jan 28, 2020	Android 9	Feature	1	1	pulled
`T866NKOU1ASL3`	Jan 27, 2020	Android 9	Feature	1	1	pulled
`T866NKOU5DXJ1`	–	Android 12	Feature	5	1	on server

How to download SM-T866N firmware

We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:

samloader download -m SM-T866N -r KOO

Replace KOO with your region code. Step-by-step instructions, including a graphical alternative: How to download Samsung firmware.

Changelog and security patch level

Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-T866N / KOO release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).