Wow somehow my Mac air M1 does not go into DFU mode with the above exact same process. It just powers up into options screen. Tried now probably a million times!So
Okay, so I have a M1 Air also, so thought I'd try to enter DFU. It is very clumsy, but after trying a few times unsuccessfully, @
Nrwrit3r instructions worked for me, i.e.:
"First hold power button to completely shut off Mac if it’s on. Then hold power button (only power button) as it turns on, keep holding until it says something like “other settings” loading (gets you to disk utility and stuff). Once there, *then* follow the instructions on the website Apple has to hold the power button along with the other ones to get it into DFU. it’s very unintuitive!"
Not at all intuitive (i.e. machine is active and then you do the presses). As noted above, when you are in DFU the screen will go completely blank.
Note I have not attempted to actually do a fresh install on the Air (as I don't want to reinstall the OS as for family and setting up remotely again is a complete pain with two factor authentication without another local device).
Couple of troubleshooting points:
* If on a normal power up not attempting DFU (i.e. to a screen regardless of OS, recover, options, etc.) you don't get a padlock symbol on Configurator, then I'd guess you have an incompatible cable.
* No good deed goes unpunished as they say, after entering DFU on the Air, I then struggled to get it out of DFU ! Turns out the same key combination gets you out (phew !).