Oura Ring 4 Firmware Update Causes Sync Failures
A new update causes connectivity issues for some users, potentially leading to the loss of two days of health data.
Updated on Oct. 29, 2026 in Consumer Electronics
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Firmware update 2.13.1 is causing Bluetooth connectivity failures for Oura Ring 4 users, potentially stranding up to two days of health data. The issue, designated internally as #495, prevents rings from syncing when paired with a new smartphone.
Why it matters
The bug highlights the risks of mandatory, automated firmware updates that enforce strict validation protocols without accounting for existing user configurations. It leaves affected owners unable to access their data unless they use specific workarounds.
The 2.13.1 update introduced a validation conflict regarding authentication keys stored from previous phone pairings. Users can bypass the error by placing the ring on its charging tray, which triggers a communication mode that sidesteps the pairing validation failure.
The players
Oura
Manufacturer of health-tracking smart rings that integrates automated firmware updates into its mobile application ecosystem.
The details
The firmware enforces strict validation of pairing keys that rejects mismatches occurring when users switch smartphones. Because Oura pushes updates automatically when the ring battery is at or above 30%, many users received the update without authorization. Performing a factory reset to resolve the connectivity failure permanently deletes all data currently stored on the hardware.
Timeline
October 28, 2026: Version 2.12.15 was listed as the most recent stable firmware.
October 29, 2026: Reports emerged regarding the 2.13.1 firmware synchronization bug.
The Tech Race
This incident marks a departure from the stability users expect in the competitive smart ring market. It follows a similar data-loss event in July 2026, suggesting ongoing challenges in Oura's software validation lifecycle.
Users currently unable to sync their Oura Ring 4 should avoid performing a factory reset to prevent permanent data loss. Placing the ring on the charging tray may allow for successful data synchronization until a permanent software fix is released.
The takeaway
The incident demonstrates the fragility of wearable devices that rely on background updates without user oversight. Users should monitor Oura’s official support channels for the release of a subsequent firmware version that resolves Issue #495.
Further reading
For more on device connectivity and performance updates, explore Consumer Electronics.
Source note: This article includes information reported by Tech Times.
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