Cisco RV series GUI login loop

If you’re trying to login to a Cisco RV series router and get stuck in a login loop (password is not rejected or accepted) then following the steps below.

You’ll be able to access the router again and have the configuration preserved!

  1. Format (FAT32) a USB stick.
  2. Download the latest RV340 firmware from Cisco’s website.
  3. Copy the firmware to the USB stick.
  4. Rename the firmware file to {PID}.img. Make sure to replace {PID} with the actual PID of your unit. This can be found on the unit’s label. For example, my unit’s PID is “RV340-K9”, so the file on the USB stick was renamed to “RV340-K9.img”. The PID and VID are displayed next to each other, so make sure you only use the PID.
  5. (Optional) Connect to the RV340 via the console port to confirm it’s booting up correctly.
  6. Insert the USB stick into the RV340.
  7. Turn on the RV340.

At this point, the unit will boot up and then apply the firmware upgrade. It will then reboot.

You’ll have to wait around 10 minutes for this process to complete. During this time the DIAG light will occasionally flash red.

Once the unit has booted up try logging into the GUI again.

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