F966USQSCBZH3 – Galaxy Z Fold7 firmware

Build F966USQSCBZH3 is a security update for the Galaxy Z Fold7 (SM-F966U) on Android 16 (One UI 8). It first appeared on Samsung's servers on Aug 31, 2026 (method) and has reached 7 regions so far. It raises the bootloader bit from 11 to 12: once installed, the device no longer accepts firmware with bit 11 or lower, so a downgrade to F966USQSBBZG3 is blocked. Samsung still serves this file.

Model
SM-F966U
Android
Android 16
Type
Security
Bootloader bit
12
First released
Aug 31, 2026
Regions
7

Rollout timeline by region

The date each region code (CSC) first received F966USQSCBZH3, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)
ATTUSA (AT&T)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
CCTUSA (Comcast)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
TMBUSA (T-Mobile)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
TMKUSA (MetroPCS)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
USCUSA (US Cellular)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
VZWUSA (Verizon)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3
XAAUSA (unlocked)Aug 31, 2026day 0F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3

Download and release notes

samloader download -m SM-F966U -r XAA -v F966USQSCBZH3/F966UOYNCBZH3/F966USQSCBZH3

Samsung's release notes and security patch level for this update: SM-F966U / XAA on doc.samsungmobile.com. What each part of the build number means: decode F966USQSCBZH3.