Firmware Devices Direct Download Pricing News App

© 2015, 2026 Samfrew.com

Disclaimer: Flashing Samsung firmware is a risky process that can potentially brick your device. By flashing firmware, you are modifying the software on your device, and if anything goes wrong, your device may become unusable.

[email protected] Privacy Policy Terms of Service

Samsung Galaxy Watch4 (SM-R870) Android 16 firmware update R870XXU1JYL6 – KOREA | SamFrew

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

Galaxy Watch4

SM-R870

Release R870XXU1JYL6

KOREA · KOOAndroid 16Built 1/6/2026

Download

Download firmware

KOO-R870XXU1JYL6-20260121154241.zip

Standard download is free. Premium download uses paid allowance, or your existing paid entitlement.

File size3.3 GB

Checking accessLoading...

More options

Browse files insideSee the TAR files, checksums, and download single TARs (Premium) · Samfrew Files→

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: R870XXU1JYL6
CSC: R870OXM1JYL6
Country: KOREA
Changelist: 32155332
Build date: 1/6/2026
Added to Samfrew: 12/15/2025