Factory Reset? How do I factory reset everything

Well, just updated, and my printer takes around 20 to 30 minutes to start up. Just ridiculous… How do I factory reset it? The deletion of old files is just impossible and doesn’t work…

What can I do to erase all files and factory reset the box? It’s a disaster zone after a fair bit of use. There needs to be a way to factory reset everything or how can I manually delete all the files? Can I take a chip out of the mainboard and reformat or something?

So no factory reset is possible… I spent a few hours deleting all of the files one by one until they were all gone.

Printer start up speed seems OK now.