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Firmware

Firmware update stalls at a percentage

An over-the-air update sits at the same percentage for a long time, fails, or the device becomes unresponsive afterwards.

Applies to
  • Cameras, hubs and sensors
  • Wearables and watches
  • Devices updated over Wi-Fi or Bluetooth
Last verified2026-10-14
Quick answerTroubleshooting · last verified 2026-10-14

An over-the-air update sits at the same percentage for a long time, fails, or the device becomes unresponsive afterwards. Most common cause to check first: Unstable Wi-Fi or low signal during download

Applies toCameras, hubs and sensors, Wearables and watches, Devices updated over Wi-Fi or Bluetooth
CategoryFirmware
Escalate whenNever power off a device mid-update on purpose. If it is unresponsive after twenty minutes, follow the vendor recovery procedure rather than repeatedly cutting power.
Last verified2026-10-14
How to cite this pageIoT Atlas. "Firmware update stalls at a percentage". https://hi-spark.net/troubleshooting/firmware-update-stuck.html Last verified 2026-10-14.

Likely causes

  • Unstable Wi-Fi or low signal during download
  • Battery below the required level for the update
  • Interrupted by a reboot, power cut or app being closed
  • Update server or CDN issue
  • Device storage or partition too full for the image

Quick checks

  • Confirm the device is on stable power or above 50 percent battery
  • Check Wi-Fi signal strength at the device
  • Look for a second staged update that must run after the first
  • Check the vendor status page for an outage

Step-by-step fix

1

Move the device closer to the router for the update

2

Keep the app in the foreground and the phone unlocked

3

Let the update finish; a stalled progress bar can still complete

4

If it fails, retry once from the app and not by power cycling

5

On repeated failure, use the vendor recovery or USB update path

Frequently asked questions

Why does this happen: Firmware update stalls at a percentage?

An over-the-air update sits at the same percentage for a long time, fails, or the device becomes unresponsive afterwards.

What is the most likely cause?

Unstable Wi-Fi or low signal during download; Battery below the required level for the update; Interrupted by a reboot, power cut or app being closed.

What should I check first?

Confirm the device is on stable power or above 50 percent battery; Check Wi-Fi signal strength at the device; Look for a second staged update that must run after the first; Check the vendor status page for an outage.

How is it fixed?

Move the device closer to the router for the update; Keep the app in the foreground and the phone unlocked; Let the update finish; a stalled progress bar can still complete; If it fails, retry once from the app and not by power cycling; On repeated failure, use the vendor recovery or USB update path

When should the case be escalated?

Never power off a device mid-update on purpose. If it is unresponsive after twenty minutes, follow the vendor recovery procedure rather than repeatedly cutting power.