# Oura Confirms Ring 4 Sync Bug Following Firmware Update Users facing connectivity issues with firmware 2.13.1 can resolve the problem via manual charging. - **Source:** [Android Authority](https://brifing.si/source/01374d39-7ab2-4795-8e0a-444a0e7b4327) - **Published:** 2026-10-28 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/36674b22-d36b-4a19-bd0b-9a174471d19c ## Firmware 2.13.1 Sync Failure Oura has officially acknowledged a technical defect within firmware version 2.13.1 affecting the Ring 4 hardware. This specific update prevents the wearable device from successfully synchronizing data with the companion mobile application. The company identified this connectivity disruption as a known issue, impacting users who recently updated their device software. ## Triggering the Sync Bug The synchronization failure is specifically triggered when users switch to a new smartphone without performing a factory reset on their ring first. This migration process creates a conflict between the device and the app, rendering the current firmware version unable to establish a stable connection for data transfer and health tracking. ## Simple Resolution Mechanism Affected users do not require complex technical support to restore functionality to their Ring 4. The company recommends placing the smart ring onto its dedicated charger while keeping the Oura app open on the smartphone. This manual process forces the device to re-establish a handshake connection, effectively bypassing the current software bug. ## Update Caution Advised For Ring 4 owners who have not yet installed firmware 2.13.1, the company suggests delaying the update process. Holding off on this installation prevents the potential sync disruption entirely. Those who have already applied the update should follow the documented charging workaround to maintain their daily health data collection and app integration. ## Recent Feature Expansion This firmware issue coincides with Oura’s recent rollout of advanced health monitoring features for the Ring 3 and newer models. These additions include Cardio Effort and automatic VO2 Max tracking capabilities. The company is actively expanding its software ecosystem, though this recent update cycle has introduced unexpected friction for the latest hardware. ## Documentation of Known Issues Oura maintains a dedicated known-issues page to provide transparency regarding software performance and hardware bugs. The confirmation of the Ring 4 sync problem was published here, following reports identified via external outlets like Gadgets and Wearables. This centralized communication channel helps users troubleshoot common problems without needing direct customer support intervention. ## Hardware and Software Interdependency The situation highlights the critical dependency between wearable hardware and mobile software ecosystems. Even minor firmware adjustments can disrupt complex data synchronization protocols, especially during device migration scenarios. Oura’s reliance on app-based connectivity makes these firmware stability checks essential for maintaining user trust and consistent health data reporting across different mobile platforms. ## Future Stability Expectations As Oura continues to integrate sophisticated metrics like VO2 Max, the stability of firmware updates remains a priority for the engineering team. Users should monitor the official known-issues page for future patches that will likely address the 2.13.1 bug permanently. Consistent software maintenance is vital for the long-term reliability of smart rings. ## Sources covering this story - https://www.androidauthority.com/oura-ring-4-sync-bug-3729281/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._