[@knowltonjayne]

oh no! I only just saw this.

Prusas have two reset buttons: the factory reset process (which I think you did: front X button plus the dial button, as detailed here: [Factory reset](https://help.prusa3d.com/en/article/factory-reset_2216)) plus the indent next to the USB port.

Prusa claim it’s impossible to delete the bootloader firmware, so if these don’t work, try their technical support.