Galaxy Watch9 SM-L345N updates & firmware
This page tracks every software update Samsung's update servers list for the Samsung Galaxy Watch9 (SM-L345N). The latest stable build is L345NKOS1AZH4 (Android 17, security update), first released on –. The current bootloader (binary) version is 1. A device on bit 1 only accepts firmware with bit 1 or higher – see downgrading and the bootloader bit.
Rollout: build L345NKOS1AZH4 (Android 17 (One UI 9)) is live in all 4 regions.
- Latest build
L345NKOS1AZH4- Released
- –
- Android
- Android 17
- Bootloader bit
- 1
- Regions
- 4
- Stable builds
- 4
Update policy
Samsung has not published an update commitment for the Galaxy Watch9. According to our data it is on Android 17 (One UI 9).
Compare all models: Samsung update policy by model.
Latest firmware by region (CSC)
Samsung builds firmware per region code (CSC). Pick the code that matches your device – it is shown under Settings › About phone › Software information › Service provider software version. Follow a code for its complete history.
| CSC | Region | Latest build | Android | Released | Builds |
|---|---|---|---|---|---|
KOO | South Korea | L345NKOS1AZH4 | Android 17 | – | 5 |
KTC | South Korea (KT) | L345NKOS1AZH4 | Android 17 | – | 3 |
LUC | South Korea (LG U+) | L345NKOS1AZH4 | Android 17 | – | 3 |
SKC | South Korea (SKT) | L345NKOS1AZH4 | Android 17 | – | 3 |
Firmware history (4 builds)
Every stable build (PDA version) Samsung has published for the SM-L345N, newest first. “Released” is the earliest date the build appeared on Samsung's servers in any region (how dates work). “pulled” means Samsung no longer serves the file for that build, usually because newer builds replaced it (details).
| Build (PDA) | Released | Android | Type | Bit | Regions | File |
|---|---|---|---|---|---|---|
L345NKOS1AZH4 | – | Android 17 | Security | 1 | 4 | on server |
L345NKOU1AZFL | – | Android 17 | Feature | 1 | 4 | on server |
L345NKOU1AZH6 | – | Android 17 | Feature | 1 | 1 | on server |
L345NKOU1AZJ3 | – | Android 17 | Feature | 1 | 4 | on server |
How to download SM-L345N firmware
We do not host firmware. Download it directly from Samsung's servers with a free open-source tool, for example samloader:
samloader download -m SM-L345N -r KOOReplace KOO with your region code. Step-by-step instructions, including a graphical alternative:
How to download Samsung firmware.
Changelog and security patch level
Samsung publishes the release notes for each update, including the security patch level, on its own site. They are listed per region – for example SM-L345N / KOO release notes on doc.samsungmobile.com. Each region page here links to the notes for that code. We don't show the patch level ourselves because Samsung's update servers don't report it (why).