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

SM-R870X firmware – Samsung Galaxy Watch4 | SamFrew

Home
Devices
Galaxy Watch
Galaxy Watch4
SM-R870X

Samsung Galaxy Watch4 SM-R870X in Silver

Silver

Watch · Samsung Galaxy Watch4

SM-R870X firmware

Stock firmware and official updates for the Samsung Galaxy Watch4 (SM-R870X), by region.

Model code: SM-R870X
Released: Aug 2021
Latest build: R870XXXU1AVL2
Newest Android: Wear OS 11
Regions: 1 CSCs · 1 countries

Firmware by region All SM-R870X firmware

SM-R860 SM-R870 SM-R865F SM-R875F SM-R885F SM-R865N SM-R875N SM-R885N SM-R865U SM-R875U SM-R860X

Software support

Update policySecurity updates endedLast on Samsung's security update list in Sep 2026

Security updates untilAug 31, 2026As published by Samsung

Latest official updateWear OS 11R870XXXU1AVL2 · Jan 11, 2023

Security patch levelJune 2021Monthly release fixed 59 vulnerabilities

Latest SM-R870X firmware by region

Full firmware list →

RegionBuildAndroidSecurity patchDateDetails

Hungary PAPBuildR870XXXU1AVL2AndroidWear OS 11Security patchJun 2021ReleasedJan 11, 2023DetailsWhat's new

SM-R870X update history

Latest Jan 11, 2023

Samsung's official release notes, newest first.

Jan 11, 2023R870XXXU1AVL2Wear OS 11 · June 2021 patch

• Stability and reliability The stability has been improved.

Released for 1 CSC: PAP

Source: Samsung

Aug 6, 2021R870XXXU1AUH2Wear OS 11 · June 2021 patch

· Device stability improvements, bug fixes. · New and / or enhanced features. · Further improvements to performance.

Released for 1 CSC: PAP

Source: Samsung

Specifications

Taken from the SM-R865F; this model can differ (chipset, network bands).

Display

Display size: 1.2" (30.4mm)
Resolution: 396 x 396
Display type: Super AMOLED

Platform

CPU speed: 1.18GHz
CPU cores: Dual-Core

Memory

RAM: 1.5 GB
Storage: 16 GB
Card slot: N/D

Battery

Battery: 247 mAh

Body

Dimensions: 40.4 x 39.3 x 9.8 mm

Connectivity

Wi-Fi: 802.11 a/b/g/n 2.4+5GHz
Bluetooth: Bluetooth v5.0
NFC: Yes
Positioning: GPS,Glonass,Beidou,Galileo

Software

Security updates until

31 August 2026