Samsung Galaxy Tab Active5 5G (SM-X306B) Firmware Overview
What is the latest SM-X306B firmware?
X306BXXSDDZH1, released August 21, 2026 for region CAU with Android 16. It is a security update on bootloader binary 13. The archive holds 4 official builds for this region.
Is the Samsung Galaxy Tab Active5 5G still getting updates?
Yes. The newest build is from August 2026.
Can I downgrade the SM-X306B firmware?
Only to builds with the same bootloader binary (the Bit column) or higher. In the archive the binary of this model rose from 10 to 13:
- Binary 13 — since Aug 2026
- Binary 12 — since Jul 2026
- Binary 11 — since Jun 2026
- Binary 10 — since Feb 2026
A phone already on binary 13 rejects builds with a lower binary in Odin ("SW REV CHECK FAIL"), so it can go back to an earlier Android version only if that version has a binary 13 build. How to read a build number.
SM-X306B firmware for region CAU
How to Flash SM-X306B Firmware
Put the Samsung Galaxy Tab Active5 5G into Download Mode, load the BL, AP, CP and CSC files into Odin on a Windows PC and press Start. Pick a build with Bit 13 or higher if your phone is already on the latest firmware. Use HOME_CSC to keep your data, CSC for a full wipe.