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Firmware update is stuck or failed

Connie D.
Updated

A failed firmware update can be resolved without losing data. Learn what to do when a firmware update is stuck or fails on your NOWATCH.

Known Issue for iOS users only

After the recent firmware update, your watch may show as disconnected. The update may also display as "failed" even though it completed successfully. To resolve this:
  1. Remove the watch from your phone's Bluetooth settings.
  2. Open the app and tap Connect to re-pair your watch.
  3. Confirm your firmware version is 2026.06.30.3.
Another issue you may experience:
  1. The firmware update takes a long time to finish, and once it does, it fails.
  2. When you access your phone's Bluetooth screen, you can see your NOWATCH serial number showing as Connected, but the information (i) icon next to it is missing. If that's the case, you won't be able to forget the watch on Bluetooth.
  3. Reconnecting via the app doesn't work.
What you can do to fix this issue:
  1. Once you see the firmware update failed message, close this screen and navigate to the Home screen.
  2. Fully close the NOWATCH app, and perform a manual factory reset. On Bluetooth, the device will still show as connected without the information (i) icon next to it. Leave it as it is.
  3. Open the app, access Device Details, and tap Reconnect. Wait for the "Pair" pop-up to show. Do not force-close the app even if the pop-up shows with a delay. Tap it once it does, and that should re-establish your connection. 

If you experience any issues while installing a firmware update, such as a frozen screen, a stalled installation, or a message that the update failed, try the steps below.

Fixing common firmware update issues

  1. Place the watch on your wrist
  2. Fully close the NOWATCH app
  3. Reboot your device:
    • Press and hold the crown for about 15 seconds, until you feel a vibration.
  4. Reopen the app:
    • Your NOWATCH should reconnect automatically. If not, tap the watch icon at the top right and tap Connect.
  5. Check your firmware version:
    • Tap the watch icon (Device Details screen).
    • If the update is installed successfully, the Firmware Update button won't be available.
    • If the update did not install, the button will be active.
  6. If the update did not install:
    • Place your NOWATCH on the charger and follow the in-app instructions to try installing the update again.

Reminder

Make sure your NOWATCH has at least 80% battery before starting the update.

 

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