Yamaha DTXpress/DTXplorer/DTXtreme

There are two issues here:

1. should people copy the ROMs, or other parts of products - simple
answer is no.

2. why should they want to?  Answer, because manufacturers don't want
to supply upgrades.  It may be that it is technically impossible for a
DTX III chip to work in the II due to hardware changes.  If not,
Yamaha could supply upgraded ROMs if the wanted to.  Even if a
straight upgrade is not possible, a DTX II ROM with the new sounds in
would, I am sure, be possible if Yamaha wanted to make one.

It is not unusual to be able to upgrade sofwtare functionality without
scrapping the hardware.  Even Microsoft don't force you to buy a new
computer just to buy a software upgrade (although I am sure they would
if they could, and if you had to buy the computers from them).  Garmin
supply free upgrades of the software in their GPS systems.  This is
actually for free, but I wouldn't mind paying for an upgrade to get
new features if they were of use to me.  Given the DTX has a serial
port, a software upgrade without removing the ROMs could have been
built into the poruct if FLASH ROMs were used.

The original question was - "Is it possible to upgrade the sounds in a
DTXpress 2 to a, let's say, DTXpress 3."  The answer, I am sure is -
"if Yamaha wanted to supply it - they could".  If they don't, it may
be possible to use the DTX 3 ROM in the DTX 2 - only Yamaha really
know the answer to that at the moment.  Personally I would like to see
Yamaha supply  upgrade ROMs, even if they do it through an independent
agent to save themselves the hassle (for a fee of course).  It might
help them shift all the left over DTX 2 boxes in the UK.

Keith.