I'm sure there must be some Key combinations for the Start etc. Thanks a lot guys for your help.

Moderators: Sharp, X-Trade, Pepperpotty, karmathanever
The LATEST Operating System versions for the Korg Trinity are:
For all Trinitys that do NOT have the MOSS-TRI option = OS v2.4.1
For Trinitys that DO have the MOSS-TRI Option = OS v3.1.2
-------
a) Firstly, obtain the two boot disks for whichever Operating
System you need. (as above).
b) Then, if you wish, save any of your custom onboard patches
(PCG data) from your Trinity onto a seperate disk for
safe-keeping and re-loading afterwards (if desired).
c) IMPORTANT:
1) Make sure you have a steady supply of power.
2) Disconnect any midi cables.
3) Lastly, don't touch anything while the disks are loading!
OK, here we go:-
1) Turn off the Trinity, and then insert Disk 1 into the Trinity.
2) Power on, while holding down the <ENTER> and <RESET> keys.
3) The Trinity will prompt for a boot disk which it should find and
from then on the procedure is automatic.
4) The only intervention that you'll be required to provide will be
the insertion of Disk 2 half-way through the process. No
confirmation is required from you after the switch... the Trinity
will find the second disk on it's own.
IMPORTANT NOTE:-
The Trinity uses FLASH ROM to hold its operating system.
While the upgrade is going on DO NOT under any circumstances press
any key or button on the keyboard, move any controller, or even touch
the screen.
Doing so may cause the upgrade to fail part-way through and should
this happen the likelihood is that your Trinity will require
returning to Korg before it will work again! Why is this? ...
...Well, the boot-code which the Trinity uses to kick off the
upgrade procedure is actually stored in Flash ROM along with the OS.
As the first thing that the upgrade procedure does is wipe the
Flash ROM, the Trinity cannot boot again until the new Operating
System has been safely installed. You have been warned. Having said
this, many Trinity users have successfully upgraded the system,
myself included.
DISCLAIMER:
People have upgraded using this advice with no problems but remember
that you do so at YOUR OWN RISK.
Remember that this is a simple procedure but can be near fatal to
your Trinity if you mess it up. If you prefer to upgrade it at a
local dealer, go that route. They should do this for free for you.