Roland D-550 V1.02 OS EPROM.
Consists of 1 EPROM.

V1.02 Release Notes
Fixes numerous system bugs, voice allocation issues, file compatibility issues and user interface issues.
Improves expansion card compatibility.
Improves MIDI Sysex compatibility.
Improves overall MIDI functionality.

Check OS EPROM version
Your current OS EPROM version is displayed when you boot up your Roland D-550 while holding the [PATCH BANK 2] and [PATCH NUMBER 6] buttons.

**Some older versions of the Roland D-550 will have the EPROMs soldering onto the main board. You will need to desolder the original EPROM and install a 28 pin socket to accommodate the new EPROM.

This EPROM is only compatible with the following Roland module:

• Roland D-550

**NOT COMPATIBLE with the Roland D-50 keyboard.

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