The first thing you want to do in this process is to make absolutely sure that you have the right upgrade file for your camera by using the firmware finder HERE. if you are performing a firmware upgrade for multiple cameras MAKE SURE YOU CHECK THE SERIAL NUMBER FOR EVER CAMERA YOU ARE UPGRADING!
in order to get rid of this issue, the first step is to close the upgrade tool (if already open). next in the folder that contains the upgrade program open the "config" file as seen below.
once this is open look for the value "verify" as seen in the picture below and change this value from "true" to "false".
save and close this document. from this point, you should be good to continue with the upgrade process.
PLEASE MAKE SURE THAT YOU BACKUP THE CAMERA BEFORE UPDATING ITS FIRMWARE AND TO RESTORE THIS BACKUP AFTER THIS PROCESS IS COMPLETED.
please reach out to support if you are still having issues with upgrading the firmware on your camera.