We’ve had many requests from K2500 owners for the new 2.64b software rev. The reason this intermediate revision isn’t being distributed more broadly is because it only fixes two particular bugs in 2.52, as follows:
- Makes K2500 work correctly with Recycle.
- Allows ModWheel (via MIDI) to work on a K2500R.
There are no reported enhancements other than this so non-Rack owners, or those who don’t use Recycle needn’t bother with this upgrade.