A3630 bootmenus

I'm testing a A3630 cpu board in a A4000T. Should the A3630 show bootmenus, just like Cyberstorm boards do, if I keep the both mouse buttons pressed? If I try that, I do get anything on the screen, booting just halts...

If there are menus, are they using 15KHz modes (which my monitor cannot show)? Isn't there an option to get them in 30 kHz, like with Cyberstorm?

@Gregor

Not that I know. Only the usual Early Startup Menu.

Yes, with 3.1.4 you can change between 15 and 31 KHz. I believe you change by pressing Enter.

@arfcarl

How can you access that menu, and what can you do/choose there?

I'am using OS 3.5.Is it possible to to change that kHz setting 'blindly' with it, without having to get a special monitor?

@Gregor

It won't work with ROM 3.1 or lower. You need 3.1.4 or a custom ROM.

You change blindly by hitting the Enter button to change from 15 to 31 KHz.