Unplugging a router while it is updating its firmware can corrupt the firmware and, in the worst case, leave the router unusable, a state often called bricked. During an update the router writes new software to its internal memory, and interrupting that write can leave it half installed. Many routers survive a failed update and simply retry, but you should never power one off in the middle of an update on purpose.
Why this happens
A firmware update replaces the router's core software, which is stored in its flash memory. Writing that software takes time and must complete cleanly.
- If power is cut mid write, the new firmware image is left incomplete or corrupted, and the router may not boot properly.
- Some routers have a backup or recovery firmware that can restore the device automatically after a failed update.
- Others have no such safeguard, so an interrupted update can leave them unable to start at all.
- The outcome ranges from a quick automatic recovery to a router that needs manual recovery or replacement.
Is this normal?
No. You should always let a firmware update finish. Accidental power loss does happen, but it is a genuine risk and not a normal part of using the router.
Does it cause any problems?
It can cause corrupted firmware, boot loops, a total loss of Wi-Fi, or a bricked router. How serious it is depends on whether the router has a recovery mode built in.
How to fix or check it
- Prevention first: do not unplug the router during an update. Updates usually take a few minutes and the router reboots itself, so wait until the lights return to their normal steady pattern.
- Use a stable power source, and consider a small backup power supply if your area has frequent outages.
- If an update was interrupted, wait several minutes without touching it, since many routers detect the failure and retry or roll back on their own.
- Power cycle once: unplug for about 30 seconds, then plug it back in and wait.
- Try to reach the admin page in a browser using a common address such as 192.168.0.1 or 192.168.1.1.
- Check the manual for a recovery process. Some models have a hold reset procedure or a dedicated recovery mode to reload firmware.
- If it boots but misbehaves, do a factory reset by holding the reset button, then reconfigure it.
- If it stays dead, contact the manufacturer's support.
Frequently asked questions
Will one accidental unplug always brick the router?
No. Many routers recover automatically or retry the update, but there is a real chance it can brick the device, so avoid it.
How long do router updates take?
Usually a few minutes, including a reboot. Wait until the status lights settle into their normal pattern before assuming it is done.
How do I know an update is running?
Status or power lights often blink in an unusual pattern during an update. If unsure, check the router's admin page or companion app.