You are watching an EPROM with the last firmware for the Roland MKS-70, the version 1.08 (marked A).
Roland MKS-70 aka Super Jupiter has three EPROMs: ROM A (the main board or Assigner board), ROM B and ROM C (these are the module boards, or voice boards). If your module boards ROM is version 1.03 or newer, you don't need to upgrade these - they kept the same data along all the newer versions although the numbers on the labels changed. If your ROM B and C are older, then you should buy the set with the 3 EPROMs.

There is a ton of bug fixes and improvements with every new version.

To check your ROM version, just hold the VALUE button while powering up your synth.
Contact if you need help.

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