Original updated 1.02 OS Firmware Eprom for

Roland D 550 Synth Module, D-50 Rack Version

Only the chip is included, of course.

No soldering is required for updating your module.

You have to just pull off the old chip and VERY carefully put the updated chip onto the socket.
Not a really difficult task, you only need a screwdriver and, maybe, an extraction tool if you are not really confident. You have to pay the right attention, BTW.

Check the correct insertion direction!!

Check the correct insertion of all the pins before pushing all the way the chip in the socket!!

IMPORTANT!! Don't open your module with the power cable connected to it!!!!

If you are not totally sure about how proceed, then better leave the task to a technician.

To check your D-550 firmware version use this switch combination:

Keep pressing Patch BANK 2, Patch NUMBER 6 and EDIT, while powering on the module.

If you see 1.02 version, then you don't need this upgrade chip!

This chip is not working for a D-50 keyboard, if you need one, just let me know, I can supply what you need.


Used, very good condition, 

Stock images, please wait for real item pictures

No zero or poor feedback users.
Ask me if any doubts over anything.

Insured shipping on demand, ask for the cost.

Discount on combined shipping offered, it's possible to arrange different delivery options on demand, for every European Union country*, just contact me for the actual rate!

* Please be aware, the stated shipping cost is valid ONLY for the mainland of EU countries. If you need to ship towards remote locations or islands, most of delivery companies apply much higher prices, so PLEASE, contact me in advance, so I can tell you the real cost I have to ask for.

Important! Check carefully all details and conditions BEFORE make offers or buy!

N.B. LEGGERE BENE TUTTE LE CONDIZIONI PRIMA DI FARE OFFERTE!