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Samsung Galaxy Watch4 (SM-R860) Android 16 firmware update R860ZCU2JZB5 – China | SamFrew

Home / Devices / Galaxy Watch4 / SM-R860 / CHC

Galaxy Watch4

SM-R860

Firmware R860ZCU2JZB5

China · CHCAndroid 16Built Feb 10, 2026

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File size3.4 GB

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Release information

Firmware identifiers

The software versions and region covered by this firmware update.

PDA: R860ZCU2JZB5
CSC: R860ZMK2JZB5
Country: China
Changelist: 32155332
Build date: Feb 10, 2026
Upload date: Feb 15, 2026
File name: SM-R860_23_20260212161621_y0333dowxm_fac.zip

Inside the firmware

Software details

Read from the build properties and kernel of this firmware.

One UI Watch: 8.0
Android: 16 (API 36)
Security patch: Jan 1, 2026
Bootloader: 2
Chipset: Exynos W920
Codename: freshbs
Launched with: Android 11
Apps: 32-bit only
Build number: BP2A.250325.020.R860ZCU2JZB5
Kernel: 5.15.180-32155332-abR860ZCU2JZB5