S721USQSEDZH9 – Galaxy S24 FE firmware

Build S721USQSEDZH9 is a security update for the Galaxy S24 FE (SM-S721U) on Android 16 (One UI 8). It first appeared on Samsung's servers on Sep 1, 2026 (method) and has reached 8 regions so far. It raises the bootloader bit from 13 to 14: once installed, the device no longer accepts firmware with bit 13 or lower, so a downgrade to S721USQSDDZG1 is blocked. Samsung still serves this file.

Model
SM-S721U
Android
Android 16
Type
Security
Bootloader bit
14
First released
Sep 1, 2026
Regions
8

Rollout timeline by region

The date each region code (CSC) first received S721USQSEDZH9, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
AIOUSA (Cricket)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
ATTUSA (AT&T)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
CCTUSA (Comcast)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
TMBUSA (T-Mobile)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
TMKUSA (MetroPCS)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
USCUSA (US Cellular)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
VZWUSA (Verizon)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9
XAAUSA (unlocked)Sep 1, 2026day 0S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9

Download and release notes

samloader download -m SM-S721U -r XAA -v S721USQSEDZH9/S721UOYNEDZH9/S721USQSEDZH9

Samsung's release notes and security patch level for this update: SM-S721U / XAA on doc.samsungmobile.com. What each part of the build number means: decode S721USQSEDZH9.