Hey, I know this post is kind of old, and I might be a bit nosy replying here. However, I was hesitant to disable my security options for Core Isolation since it’s there for a reason, and it was causing the error Code 39. I found a solution that worked for me and created another thread with a step-by-step tutorial. The key is to update the USB Serial Converter driver without modifying the port driver. This also prevents the issue where SuuntoLink doesn’t detect the device at all —something Raimo Järvi mentioned—because SuuntoLink (as well as DM5) only communicates with the port driver, which works well with the updated Serial Converter. I hope this solution helps anyone who comes across this old post! https://forum.suunto.com/post/163005 Have a great day!

@Alfred-Stoppels in your case you should use type B, base on your picture. However, adapters are not standard, except the thread. Thus these restrictors may not function well. In this case try this one: Restrictor for AI transmitter

Hi @noppanut15, your project sounds fantastic! To help you expand depthviz’s compatibility, I recommend focusing on parsing FIT, SDE, and XML files first, since these are the most commonly exported formats from Suunto devices, including the Suunto Ocean. You might want to use open-source FIT parsers (like FitSDK or fitdecode) and analyze sample SDE/XML structures to build robust import logic. Also, reaching out in freediving and Suunto forums with a quick upload form (Google Form or GitHub issue template) might increase contributions. Keep up the great work—this tool could be a real game-changer for the freediving community!

@Egika Many thanks ️

This is my classic chat support dialog, this one is from today, but essentially they are exactly the same. [image: 1699010559877-e11ef965-3555-4e29-ab60-44e8b74438e6-image.png] And they even don’t know where my D5 is now. [image: 1699010579528-e4ac156b-c047-4058-924f-b4c197ed5593-image.png] 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.

@Jérôme85 You might want to read this thread: https://forum.suunto.com/topic/10284/suunto-watches-to-come-in-2024/69 There are some hints or information sources in there

@jez01 Suunto app doesn’t support Vyper Novo, use SuuntoLink: https://www.suunto.com/en-gb/Support/faq-articles/suunto-app/how-do-i-sync-dive-logs-from-my-dive-computer-to-the-suunto-app/

Adding recent news to my own question: Garmin recently released their X50i dive computer. A Garmin exec confirmed that they are leaving the watch-sized dive computer market and will only focus on full size dive computers going forward. Perhaps Apple Watch Ultra is a really hard to beat in the wrist-sized computer market. I wonder if Sunnto is working on an answer to the X50i.

Update – Heads Up After a Windows Update Just a heads-up for everyone: Windows Updates may silently replace your manually selected FTDI Bus driver with the outdated Suunto version again. Super helpful, right? How to Spot This: Open Device Manager. If you suddenly see a Suunto Sports Instrument with a small warning icon under: Ports (COM & LPT) or Universal Serial Bus controllers …then congrats, Windows “fixed” it for you. The Fix: Right-click on Suunto Sports Instrument Select Properties Go to the Driver tab Click Update Driver Choose Browse my computer for drivers Click Let me pick from a list of available drivers on my computer Select Have Disk… Navigate to your unzipped FTDI driver folder and choose ftdibus.inf Hit OK, then choose USB Serial Converter from the list Click Next, close everything. ️ Note on SuuntoLink: SuuntoLink might still throw a warning that an “FTDI Driver is needed.” Just click the little to close it. (Pretty sure it just searches by driver name rather than checking if the thing actually works.) Suunto Please I don’t know if I’m the only one here who’s annoyed, but if others are also tired of this driver mess, maybe it’s time to bring out the pitchforks and torches. Suunto—it’s probably a day’s worth of work to update that USB driver. For now, that post’s sitting at like 130 views—maybe most people just disable Core Isolation, don’t use SuuntoLink, or gave up on these dive computers altogether. Who knows. But hey, if this workaround helps even a few folks, that’s a win in my book