R865USQS2JZG3 – Galaxy Watch4 firmware
Build R865USQS2JZG3 is a security update for the Galaxy Watch4 (SM-R865U)
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 2: once installed, the device no longer accepts firmware with bit 1 or lower, so a downgrade to R865USQU1AUGC is blocked. Samsung still serves this file.
- Model
- SM-R865U
- Android
- Android 16
- Type
- Security
- Bootloader bit
- 2
- First released
- –
- Regions
- 0
Rollout timeline by region
The date each region code (CSC) first received R865USQS2JZG3, counted from the first release.
| CSC | Region | Released | Rollout | Version (PDA/CSC/MODEM) |
|---|
Download and release notes
samloader download -m SM-R865U -r EUX -v R865USQS2JZG3Samsung's release notes and security patch level for this update: SM-R865U / EUX on doc.samsungmobile.com. What each part of the build number means: decode R865USQS2JZG3.