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Samsung Galaxy Watch4 (SM-R870) Android 16 firmware update R870ZCU2JZB5 – China | SamFrew

Home / Devices / Galaxy Watch4 / SM-R870 / CHC

Galaxy Watch4

SM-R870

Firmware R870ZCU2JZB5

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: R870ZCU2JZB5
CSC: R870CHC2JZB5
Country: China
Changelist: 32155332
Build date: Feb 10, 2026
Upload date: Feb 15, 2026
File name: SM-R870_4_20260212152730_ueiu5ws5c8_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: freshbl
Launched with: Android 11
Apps: 32-bit only
Build number: BP2A.250325.020.R870ZCU2JZB5
Kernel: 5.15.180-32155332-abR870ZCU2JZB5