The Yamaha AN1x Synthesizer mailing list

--- In AN1x-list@yahoogroups.com, "Lothar Mueller" <lm089@w...> wrote:
> Is there a way to check the version currently installed in my machine?
> 
> - Lothar -

Hold down the '0', '-', and '+' keys while powering on the AN1x. This key sequence 
displays the OS version of your AN1x and places the unit in test mode.

Jon