
Samsung Galaxy Tab Active5 5G
The latest firmware for Samsung Galaxy Tab Active5 5G (SM-X306B) is X306BXXSEDZI1 with Android 16, released on September 21, 2026 for 34 regions (CSC). Every official firmware build for SM-X306B, 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/X306BXXSEDZI1
SM-X306B started on Android 14 and has received 2 major Android upgrades; it now runs Android 16. The newest build, X306BXXSEDZI1, was released on September 21, 2026 with the September 2026 security patch. That patch (SMR Sep-2026) fixes 80 vulnerabilities, 20 of them critical. Over the last 12 months SM-X306B received 12 builds, spread over 8 different months. Samsung guarantees security updates for this model until January 27, 2032.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
Fresh new look
One UI seamlessly integrates into your daily routine by combining immersive visuals with meaningful personalization for a more refined and sophisticated design. Transparent blur effects add depth and make content easier to navigate, while floating elements react organically to your workflow for a more focused experience. Through familiar and intuitive data visualization, One UI delivers a design that feels both personal and relatable, helping you focus...
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
Enhanced Lock screen widgets
Do more on your Lock screen with brief widgets. 2 x 2 size widgets are now available, and the widget area is now larger so you can add even more widgets. You can choose either a horizontal or vertical widget layout.
Check stock prices without unlocking
Stocks you follow on Google Finance with big price changes will appear on your Now bar at the end of the trading day.
Easier file sharing with Quick Share
I...
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Stability and reliability
Device behavior has been improved.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Security
The device is protected with improved security.
These changes may vary depending on the model, country, or network operator of the customer environment.
• Stability and reliability
Device behavior has been improved.
Visual enhancements
Enjoy a more sophisticated and unique look. One UI 7 introduces a stunning redesign to key components including buttons, menus, notifications and control bars, providing a more consistent visual experience with curves and circles. Beautiful new colors, soft animations, and an innovative blur effect that's unique to One UI make information hierarchy clearer and help you focus on important information.
Reimagined Home screen
Fr...
• Security
The device is protected with improved security.
• Overall stability of your device has been improved.
• The latest Android security patch has been applied.
- Device security has been further enhanced.
• Security
The device is protected with improved security.
• The latest Android security patch has been applied.
- Device security has been further enhanced.
• Security
The device is protected with improved security.
· Device stability improvements, bug fixes.
· New and / or enhanced features.
· Further improvements to performance.
• Security
The device is protected with improved security.
Copy and paste from one image to another
Add a missing element to your picture. Just clip an object from an image in Gallery, then go to the image where you want to paste it and choose Paste from clipboard in the More options menu.
More accurate image clipping
Get exactly the area you need to clip without any unwanted parts. When you clip an image in Gallery, you have the option of editing the selected area before you save it so you can get your selecti...
Box codes of SM-X306B for different colors and markets. Firmware is chosen by the model code SM-X306B and your region (CSC), not by the SKU.

SM-X306N

SM-X300N

SM-X400N

SM-X406B

SM-X205N
The newest firmware for SM-X306B runs Android 16: build X306BXXSEDZI1, released on September 21, 2026.
The latest build for SM-X306B, X306BXXSEDZI1, was released on September 21, 2026 (1 month ago).
Over the last 12 months SM-X306B received 12 builds, with at least one new build in 8 different months.
Yes, all firmware files for SM-X306B are 100% official, original, and obtained directly from Samsung servers.
To flash SM-X306B, 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-X306B.