L705NKOS3BZF4 – Galaxy Watch Ultra firmware

Build L705NKOS3BZF4 is a security update for the Galaxy Watch Ultra (SM-L705N) on Android 16 (One UI 8). It first appeared on Samsung's servers on – (method) and has reached 0 regions so far. It raises the bootloader bit from 1 to 3: once installed, the device no longer accepts firmware with bit 1 or lower, so a downgrade to L705NKOU1AXFB is blocked. Samsung still serves this file.

Model
SM-L705N
Android
Android 16
Type
Security
Bootloader bit
3
First released
–
Regions
0

Rollout timeline by region

The date each region code (CSC) first received L705NKOS3BZF4, counted from the first release.

CSCRegionReleasedRolloutVersion (PDA/CSC/MODEM)

Download and release notes

samloader download -m SM-L705N -r EUX -v L705NKOS3BZF4

Samsung's release notes and security patch level for this update: SM-L705N / EUX on doc.samsungmobile.com. What each part of the build number means: decode L705NKOS3BZF4.