- v4.00 is required to use the new Classic Keys (ROM2) optional ROM Block

*Please see the Read Me file included in the OS downloads for a complete revision history.

System Requirements:

- any PC2
- v2.00 or greater of the system Boot Loader

Files to Download:

Each model type of PC2 has its own specific OS. Make sure you only download the file(s) intended for your model type.

• If you have the Polyphony Expansion option (PCX-1) in your Pc2 you will be downloading and installing TWO OS files.
• If you do NOT have the Polyphony Expansion option (PCX-1) in your Pc2 you will be downloading and installing ONE OS file.

To determine which file(s) you need for your unit's particular configuration, please refer to the following table: (installation instructions are included).