Galaxy A54 5G SM-A546U1 firmware

The latest stable build is A546U1UESNFZJ2 (Android 16, security update), first released on Oct 21, 2026 – 16 days ago. Samsung has published 53 stable builds for this model since Mar 23, 2023: 40 security and 13 feature updates, from Android 13 to Android 16. The current bootloader (binary) version is 23. A device on bit 23 only accepts firmware with bit 23 or higher – see downgrading and the bootloader bit.

Latest build

A546U1UESNFZJ2

Released

Oct 21, 2026

Android

Android 16

Bootloader bit

23

Regions

13

Stable builds

53

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.

Firmware history (53 builds)

Every stable build (PDA version) Samsung has published for the SM-A546U1, newest first. “
” is the earliest date the build appeared on Samsung's servers in any region. “
” means Samsung no longer serves the file for that build.

How to download SM-A546U1 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-A546U1 -r XAA

Replace XAA 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-A546U1 / XAA release notes on doc.samsungmobile.com. Each region page here links to the notes for that code.