
Samsung Galaxy Tab Active3
The latest firmware for Samsung Galaxy Tab Active3 (SM-T577U) is T577UVLSFEYI1 with Android 13, released on November 7, 2025 for 7 regions (CSC). Every official firmware build for SM-T577U, 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/T577UVLSFEYI1
SM-T577U started on Android 10 and has received 3 major Android upgrades; it now runs Android 13. The newest build, T577UVLSFEYI1, was released on November 7, 2025 with the October 2025 security patch. That patch (SMR Oct-2025) fixes 25 vulnerabilities, 0 of them critical. No new build has appeared for 11 months, so regular updates for this model have most likely ended.
Specifications of SM-T577UZKDN14, a regional variant of the same device. Chipset and SIM lines are left out: they can differ by region.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• The security of your device has been improved.
· The security of your device has been improved.
• The security of your device has been improved.
· The security of your device has been improved.
• The security of your device has been improved.
· The security of your device has been improved.
One UI 5.1 takes your phone to the next level with new Gallery features as well as productivity and personalization enhancements.
Quickly change the color tone for selfies
It's easier to change the color tone of your selfies using the Effects button at the top of the screen.
More powerful search
You can now search your Gallery for more than one person or subject at the same time. You can even search for people without tagging their names just by tapping...
One UI 5 brings you more powerful personalization and makes it easier to get things done across your Galaxy devices.
New app icons and illustrations
Icon symbols are larger for a bolder look that's easier to scan. Subtle background gradients and improved contrast give a fresher, more natural feel. New help illustrations have been created to give a consistent look to all apps.
Smoother than ever before
New animations and transition effects make swi...
Switch between apps quickly
A taskbar now appears at the bottom of the screen for quicker navigation between apps.
Quickly open apps in split screen or a pop-up window
Drag apps from the taskbar or Recents screen to open them however is most convenient for you. Drag to the top, bottom, left, or right edge of the screen to open in split screen. Drag to the center of the screen to open in a pop-up.
Open app pairs quickly
Pair apps that you often use together,...
Box codes of SM-T577U for different colors and markets. Firmware is chosen by the model code SM-T577U and your region (CSC), not by the SKU.

SM-T577

SM-T570

SM-T580X

SM-T677V

SM-T562
The newest firmware for SM-T577U runs Android 13: build T577UVLSFEYI1, released on November 7, 2025.
The latest build for SM-T577U, T577UVLSFEYI1, was released on November 7, 2025 (11 months ago).
SM-T577U has had no new firmware for 11 months, so regular updates have most likely ended.
Yes, all firmware files for SM-T577U are 100% official, original, and obtained directly from Samsung servers.
To flash SM-T577U, 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-T577U.