How can I hard reset the device, as in completely format the device. Pressing the button or using the UI does a soft reset as my configs are still present. I need to wipe 100% of the config for plugins like collectd, Prometheus etc.
I need a fresh device.
It should be possible to format the device completely by pressing the button. Did you follow the instructions? :Press and hold for 10 seconds, and then release to reset the router
to factory settings. The light will turn blue and flash rapidly. All data
will be cleared when the light becomes solid blue
Upload a firmware file to your router’s /tmp directory (if you’re on *nix or Mac, scp firmware-file.tar root@router:/tmp). You can also wget or curl one from the web on the router itself, probably.
cd /tmp
sysupgrade -F -n firmware-filename.tar
(-F means force, -n means don’t save configuration). The router will reboot.