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JX-3P rom upgrade?
Old 4 weeks ago
JX-3P rom upgrade?

Hey all,

I've had my JX-3P for a few months now and I must say that I really enjoy it. However I would really find it useful to have it respond to midi velocity. I know the Kiwi Mod exists, as well as the Riversynths MIDI expansion kit, but I read in an old Sound on Sound article that Roland had a ROM upgrade that added velocity, which seems like it would be much cheaper and easier to install.

I found a couple ebay listings that claim to be the velocity ROM (version 4.0).

Has anybody tried the ROM upgrade? Does version 4.0 definitely add velocity? (over midi of course). I managed to obtain a copy of the version 4.0 ROM image, how difficult is it to burn one myself? Which EPROM chips can I use?
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