F966U1UEUABZF1 – Galaxy Z Fold7 firmware

Build F966U1UEUABZF1 is a feature update for the Galaxy Z Fold7 (SM-F966U1) on Android 16 (One UI 8). It first appeared on Samsung's servers on Jun 14, 2026 (method) and has reached 14 regions so far. It keeps bootloader bit 10, so downgrading to the previous build F966U1UESABZE3 is still possible. Samsung still serves this file.

Model
SM-F966U1
Android
Android 16
Type
Feature
Bootloader bit
10
First released
Jun 14, 2026
Regions
14

Rollout timeline by region

The date each region code (CSC) first received F966U1UEUABZF1, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
TMBUSA (T-Mobile)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
TMKUSA (MetroPCS)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
ATTUSA (AT&T)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
AIOUSA (Cricket)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
TFNUSA (TracFone)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
VZWUSA (Verizon)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
XARUSA (Cellular South)Jun 14, 2026day 0F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
ACGUSA (C Spire)Jun 15, 2026+1 dayF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
CCTUSA (Comcast)Jun 15, 2026+1 dayF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
LRAUSA (Bluegrass)Jun 15, 2026+1 dayF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
USCUSA (US Cellular)Jun 15, 2026+1 dayF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
XAAUSA (unlocked)Jun 15, 2026+1 dayF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
DSAUSAJun 16, 2026+2 daysF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1
DSHUSAJun 16, 2026+2 daysF966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1

Download and release notes

samloader download -m SM-F966U1 -r XAA -v F966U1UEUABZF1/F966U1OYMABZF1/F966U1UEUABZF1

Samsung's release notes and security patch level for this update: SM-F966U1 / XAA on doc.samsungmobile.com. What each part of the build number means: decode F966U1UEUABZF1.