F9660ZSSDCZJ1 – Galaxy Z Fold7 firmware

Build F9660ZSSDCZJ1 is a security update for the Galaxy Z Fold7 (SM-F9660) on Android 17 (One UI 9). It first appeared on Samsung's servers on Oct 25, 2026 (method) and has reached 2 regions so far. It raises the bootloader bit from 12 to 13: once installed, the device no longer accepts firmware with bit 12 or lower, so a downgrade to F9660ZCSCBZI1 is blocked. Samsung still serves this file.

Model

SM-F9660

Android

Android 17

Type

Security

Bootloader bit

13

First released

Oct 25, 2026

Regions

2

Rollout timeline by region

The date each region code (CSC) first received F9660ZSSDCZJ1, counted from the first release.

Download and release notes

samloader download -m SM-F9660 -r BRI -v F9660ZSSDCZJ1/F9660OZSDCZJ1/F9660ZCSDCZJ1

Samsung's release notes and security patch level for this update: SM-F9660 / BRI on doc.samsungmobile.com. What each part of the build number means: decode F9660ZSSDCZJ1.