The Yamaha AN1x Synthesizer mailing list

--- In AN1x-list@y..., "Mike B (digiboy)" <digiboy@n...> wrote:
> 
> Sorry But I can't  seem to find this in the Archive. Can someone 
explain
> how you check which OS your AN1x is running? And also are 
any big
> differences in the OS from 1.01 to 1.04?
> 
> Mike Berman
> digiboy@n...

AFAIK you can only display the OS version at power up...

hold the '0', '-', and '+' key down while powering up. OS 1.04 fixes 
a few bugs in so far as an audible popping when using the Sync 
Delay and and intermittent, and inaccurate, low battery message 
experienced by some users. Check the Tips & Tricks section for 
a write up on replacing the EPROM chip (and check out Elson's 
photos to see what's what in the AN1x):

http://groups.yahoo.com/group/AN1x-list/files/Tips%20and%20Tr
icks/

HTH,

Jon