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Samsung Galaxy Watch4 (SM-R870) Android 16 firmware update R870ZCU1JYL6 – China | SamFrew

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

Galaxy Watch4

SM-R870

Release R870ZCU1JYL6

China · CHCAndroid 16Built 1/6/2026

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CHC-R870ZCU1JYL6-20260127163211.zip

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File size3.0 GB

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This file is also the factory firmware for this release.

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

PDA: R870ZCU1JYL6
CSC: R870CHC1JYL6
Country: China
Changelist: 32155332
Build date: 1/6/2026
Added to Samfrew: 12/15/2025