How to hard reset TZ 270 without GUI
Okay, a month ago I managed to import a TZ 300 config into a TZ 270 with minor snags, but now I've done it again iwth a different 300/270 pair and got burned. Apparently it switches to the new IP the moment its imported, so the remainder of the config doesn't make it (get error on GUI), but if you reboot it's got the new IP but cannot log in with HTTP or HTTPS, though responds to ping to new IP. Me thinks I should have set the 270's IP ahead of time to what it would be after the import, but too late now. How to I factory reset this thing? I've managed to never ever need to do that with a Sonicwall as best I can recall. The reset button causes it to come up in maintenance mode and ask for a maintence key (what's that), so no idea how to proceed, No luck finding docs that describe this. It shouldn't be this hard.