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Samsung Galaxy Watch4 (SM-R870) Android 16 firmware update R870XXU1JYK4 – KOREA | SamFrew

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

Galaxy Watch4

SM-R870

Release R870XXU1JYK4

KOREA · KOOAndroid 16Built 11/13/2025

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KOO-R870XXU1JYK4-20251215152511.zip

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File size3.3 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: R870XXU1JYK4
CSC: R870OXM1JYK4
Country: KOREA
Changelist: 32155332
Build date: 11/13/2025
Added to Samfrew: 11/15/2025