A546USQSKFZF3 – Galaxy A54 5G firmware

Build A546USQSKFZF3 is a security update for the Galaxy A54 5G (SM-A546U) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jul 7, 2026 (method) and has reached 8 regions so far. It raises the bootloader bit from 19 to 20: once installed, the device no longer accepts firmware with bit 19 or lower, so a downgrade to A546USQUJFZEA is blocked. Samsung still serves this file.

Model
SM-A546U
Android
Android 16
Type
Security
Bootloader bit
20
First released
Jul 7, 2026
Regions
8

Rollout timeline by region

The date each region code (CSC) first received A546USQSKFZF3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
DSAUSAJul 7, 2026day 0A546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
DSHUSAJul 7, 2026day 0A546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
ATTUSA (AT&T)Jul 7, 2026day 0A546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
TMBUSA (T-Mobile)Jul 8, 2026+1 dayA546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
TMKUSA (MetroPCS)Jul 8, 2026+1 dayA546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
CCTUSA (Comcast)Jul 9, 2026+2 daysA546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
AIOUSA (Cricket)Jul 10, 2026+3 daysA546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3
USCUSA (US Cellular)Jul 14, 2026+7 daysA546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3

Download and release notes

samloader download -m SM-A546U -r DSA -v A546USQSKFZF3/A546UOYNKFZF3/A546USQSKFZF3

Samsung's release notes and security patch level for this update: SM-A546U / DSA on doc.samsungmobile.com. What each part of the build number means: decode A546USQSKFZF3.