Anyone selling MPC 60 MK1 OS 2.12 chips?

Hello,

is there anyone willing to sell original MPC 60 MK1 OS 2.12 chips in Europe?
I bought some from "Vintage Synth Parts" from Italy, but they don't seem to work. I've contacted the guy, no response after 6 days. Now I'm looking for an alternative.

I can't write codes on chips myself, that's why I'm asking for original or at least selfmade ones that work.

Out of interest, does anyone know what year OS 2.12 was released?

Thank you!

Regards

Topper, did you install them with the correct orientation?

I did. Got something like error code 06h on the display.

Actually right now I'm looking for OS 2.02, as I found out, that might be the original OS for the MPC 60 MK1 before MK2 was released. This stuff confuses me. There's not so much information on the internet about this, or I'm just an idiot.
I bought it with OS 3.10 in it and noticed some timing issues and other strange things, years ago. I always suspected the OS. I'd like to find out now, since a few others here have the same feeling...

So if anyone got that OS 2.02 on chips or as a code, please let me know. I found a way to write chips now.

Thank you