Technically, the non-GUI method isn't approved by Nokia either: the OS X flasher-... was compiled as a semi-skunkworks project by someone in Nokia, which is why it's downlevel.

Having 770Flasher.app ask you (or interrogate your tablet) for you MAC, download the image and then flash it would all be perfectly possible. However, I'm now Mac-less, so the options are:

• Use the command line or 770Flasher.app as-is.
• Someone picks it up and does a better job (very welcome to :-))
• Someone buys me a Mac and I do a better version including these suggestions, possibly based on 0xFFFF for Intel Mac support.

Cheers,

Andrew