There are 2 different Versions of the K2000/K2000R/K2VP/K2VX Engine Board and Operating System - Janis and Calvin. When you upgrade the OS, You Must Install the Correct Software. To Find Out What Version You have now, Watch the display When you power up the Instrument. If there is a "j" after the version number in the display, you have a janis unit, and Need OS 3.87J eproms. If there is no letter after the version number, you have a Calvin Unit, and Need OS 3.87 Eproms. You must install setup eproms when upgrading to OS 3.87. Notes: If the K2000/K2000R has one or booth of The sound roms (Orchestral and/or Contemporary), IT will Almedy Have The Correct Version of the Setup Eproms. There is not an intermediated step between no roms and both roms for the "k2500" presets. It is either rom.
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