Description

Roland D-50 firmware OS upgrade v2.22 – Final Revision

This is firmware revision 2.22 and is the latest official released operation system by Roland. This operation system update/upgrade requires one eprom chip 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.

Please check your devices` serial number due to that this will only work for devices with Serial No. 868199 and up.

Improvements till OS V 2.22

• Improved – Increased output level
• Improved – Reduced digital noise level
• Improved – Key touch response curve
• Fixed – When changing the patch, sometimes unexpected output mode is selected
• Fixed – The effect of keyfollow on TVF depth is opposite to what designed
• Added – Transmitted program change no. can be programmed in each patch
• Added – Patch dump function by system exclusive.
• Added – Portamento and hold effects can be given independently on each tone in dual key mode.

Note:

• Fully verified before shipping and professionally packaged in anti-static material.
• Some older board revisions may have the OS room soldered in place.
• IC socket is located on IC 22
• You can check your current OS if you hold [ZERO] from number pad and [INCREMENT], while you power your device.
• Your device can maximum handle OS 1.10, if you have under Serial no. 868199. (I can also provide 1.10, if necessary)