Hi there, finally i have the solution! Somehow, the cable was defective. I visited an instructor near me, who has a D6i novo. We tried every possible connection with the 2 computer, 2 cable, and 2 laptops, and turned out the only faulty item is my cable. Just ordered a replacement, and problem solved (hopefully).

@sartoric yes, and no response

This is my classic chat support dialog, this one is from today, but essentially they are exactly the same.

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And they even don’t know where my D5 is now.

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And after that they told it is in the one of the finnish service, (it is listed on suunto service locator site) I called there - they told they haven’t received anything by mail.

My guess they lost it somewhere.

@Mikael said in Suunto Solution (1992 year dive computer):

Hello Community
I have an working Suunto Solution and also the data interface for it, but this uses RS232 not supported by any PC today.
Are there any modern interface to transfer data from it?
Have anyone built one, e.g. by Arduino?
Are any interface specs available/public to support a modern build?
Mikael

I know there are RS232-USB adapters, it could be what you’re looking for.