Roland MC-303 MC303 V 1.03 Firmware OS Upgrade Eprom Update [Latest Version]

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Roland MC-303 MC303 V 1.03 Firmware OS Upgrade Eprom Update [Latest Version]

SKU: FW-214 Category: Tags: , ,

Description

Roland MC-303 – OS revision: v1.03

This is firmware update 1.03 and is the latest known officially released operation system by Roland in 1997. This operation system update / upgrade requires two eprom chips as revealed in the article`s photos and the chip will be labeled to help you locate the correct chip socket. For more info, please check below.

How to check current version:

SHIFT ‘+’ SCALE ‘+’ R (BD)

Features / improvements:

  • Improved – OS stability.
  • Fixed – Randomly freeze
  • Fixed – Random pitch changes.
  • Added – midi settings Midi thru on / off

… and more …

 Grade:

  • Fully verified before shipping and professionally packaged in anti-static material.
  • The Roland MC-303 on the picture is not for sale 🙂
  • OS rom = IC 7, Data rom = IC 8

Note from the Service Manual:

Roland changed eprom type from 27C4000 to 27C4096 due to that the original type was hard to obtain for a period. You will therefore need to get an Eprom pin conversion as mentioned in the Service Manual on page 22, if Roland didn’t already install that.