Galaxy Watch 4 January 2026 Update: Will It Finally Fix One UI 8 Watch OS Issues?

Summary

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Samsung Galaxy Watch 4 users are reporting a new software update rolling out to their devices with the latest January 2026 security patch level. This is the second update after the most anticipated One UI8 Watch OS upgrade.

The latest update is sparking hope among the community that persistent issues from the One UI 8 update will finally be resolved. This development comes as welcome news to users who have been experiencing various bugs since the major firmware upgrade.

The Galaxy Watch 4 community has been eagerly anticipating fixes for problems that emerged following the One UI 8 rollout.

The update screen says stability and reliability update. Device behaviour has been improved. It improved much more than that. See below.

Major One UI 8 Watch OS upgrade

Samsung has officially completed the stable One UI 8 Watch firmware update rollout for the Galaxy Watch 4. This firmware is built on Wear OS 6 (Android 16) and features Samsung’s latest custom One UI 8 Watch interface. Notably, this update is rolling out to the Galaxy Watch 4 and all subsequent models, fulfilling Samsung’s commitment to provide four years of Android OS upgrades for the Watch 4 series.

The One UI 8 Watch update focuses heavily on personal health and wellness. Building upon its previous software foundation, Samsung has introduced a suite of new features designed to enhance sleep tracking, heart health monitoring, fitness, and nutrition. These tools empower users to develop and maintain healthier daily habits through advanced biometric monitoring and personalized wellness guidance.

Regarding the technical details, the stable One UI 8 Watch OTA update for the Galaxy Watch 4 series carries firmware build JYK4. The update is substantial, weighing in at 1.8 GB, and includes the October 2025 security patch.