I go in on recovery mode and press ctrl+D. Then there should be a menu over all boot options (boot from internal drive and more) but the timeout is super shirt so it kicks me directly to return to secure mode. I only see the dev menu for a split second. Its an hp Chromebox g3 and its enrollment locked because i bought it secondhand
if the box is enrolled, then dev mode is locked out, so it’s returning to secure mode as soon as you boot to dev mode.
things to try in order:
- perform a ChromeOS USB recovery
- log in as non-guest user
- switch to dev mode
if that doesn’t work, then your only recourse is to either have the managing entity unenroll the device, or manually flash the firmware using an external programmer (though that device may use a WSON-8 flash chip and not be clippable). A suzyQ won’t do any good on a managed device.