Samsung Galaxy Watch FE

Firmware is specific to the model code. Find yours on the box or in Settings › About phone, then pick it below.

ModelSold inFirmwareLatest build

SM-R861 · Galaxy Watch FE (Bluetooth, 40mm)Sold in66 countriesFirmware69 CSCs · 689 buildsLatest buildR861XXS2CZG3 · Jul 27, 2026→

One UI and Android versions of the Galaxy Watch FE, with the first release of each.

1. Dec 2025

   One UI 8 Watch · Wear OS 6

   Official release: R861XXU1CYK6 (SM-R861)

2. Nov 2025

   Android 16

   First firmware build: R861XXU1CYK6 (SM-R861)

3. Dec 2024

   One UI 6 Watch · Wear OS 6

   Official release: R861XXU1BXI4 (SM-R861)

4. Sep 2024

   Android 14

   First firmware build: R866USQU1AXI1 (SM-R866U)

5. May 2024

   Android 13

   First firmware build: R861XXU1AXE9 (SM-R861)

As published by Samsung for the SM-R861; other model codes can differ (chipset, network bands).

Sold in 67 countries.