SeaLog
Aqualung
How to import dives from a Aqualung i450T
The Aqualung i450T transfers over serial cable only. iOS does not expose that kind of connection to apps, so the dives come across once through a Mac or PC, then live on your phone forever.
Transfer the dives off the Aqualung i450T
- Install the driver for the cable
The serial cable is a USB-to-serial adapter, and its chipset needs a driver before any software can see the Aqualung i450T. Install the FTDI (FT232 virtual COM port) for the i750TC and i770R cable, and on macOS for every model; the older i100/i200/i300/i450T/i550 cable instead installs a "2002 Design, Inc. USB Download Interface Device" driver on Windows driver, then reboot. Skip this and the desktop app will report no device on a cable that is working perfectly.
USB download interface driver for Windows, 64-bit
These cables are USB-to-serial. Without the FTDI driver the port never appears, and the software reports no device. - Connect the Aqualung i450T to a Mac or PC
Use the serial cable made for the Aqualung i450T, not a generic charging cable: the data pins differ. Check the o-ring is seated, line the connector up with the notch on the case, and turn it to lock. An iPhone or iPad cannot open this kind of connection at all, so this step has to happen on a computer.
The o-ring must be in place, the nub lines up with the notch, then the head turns a quarter turn to lock. This cable is FTDI (FT232 virtual COM port) for the i750TC and i770R cable, and on macOS for every model; the older i100/i200/i300/i450T/i550 cable instead installs a "2002 Design, Inc. USB Download Interface Device" driver on Windows. - Put the computer into PC mode
Switch the Aqualung i450T into its PC or upload mode before you launch the software, not after. Most desktop apps only look for the unit at startup, so a computer that wakes up late is a computer the software never finds.
Most units only hold this mode for a minute or two, so do it last, right before you connect. - Download the dives with desktop software
Read the computer with DiverLog+ or Subsurface. Subsurface is free, open source, runs on macOS, Windows and Linux, and supports this model.
- Export the dives as UDDF
Export the whole logbook to a UDDF file. UDDF is the open dive-log exchange format and keeps the full depth profile, not just the summary numbers.
Export the whole logbook, not the visible page. UDDF keeps the sample-by-sample depth profile, which a summary CSV does not. - Import the file into SeaLog
Get the file to your phone. AirDrop, iCloud Drive or email all work, anything that lands it in the iOS Files app. Then in SeaLog tap the plus button, Import dives, UDDF file, and pick it. Every dive arrives with its profile, and duplicates are skipped.
A dive log app for the i450T
Once the dives are in, SeaLog treats them like its own: a scrubbable depth profile, the site pinned on a map, water temperature, gas and tank, buddies, and the photos from your camera roll matched to the minutes you were underwater. Tag the animals you saw and they go into your species life list. It works offline on the boat and syncs when you are back, and your whole logbook exports to UDDF, CSV or PDF whenever you ask, so nothing is locked in here either.
Aqualung’s own software and drivers
Half alive: the parent company collapsed into insolvency in May 2025 and was bought by HEAD in June 2025, and the mobile app survived the handover (DiverLog+ is now published by Head Watersports S.p.A. and was last updated 30 Oct 2025), but the desktop and legacy side is orphaned, with the Mac app delisted, the paid desktop versions marked Discontinued, and the classic mobile DiverLog apps pulled from both stores.
- Desktop softwareDiverLog Lite for Windows (installer)Direct 109 MB .exe and the last surviving desktop build; this is the only route left for the cable-only models.Windows
- Desktop softwareDiverLog for Windows download pageLanding page for the Windows build; it also states plainly that the paid Full edition is discontinued.Windows
- DriverUSB download interface driver for Windows, 64-bitThe non-FTDI driver used by the older clip cable; the installer identifies itself as 2002 Design, Inc.Windows
- DriverUSB download interface driver for Windows, 32-bit32-bit build of the same 2002 Design driver for the older clip cable.Windows
- DriverFTDI USB serial driver for macOS 10.14 and newermacOS uses the FTDI driver for every model; drag the app to Applications and run its Install button.macOS
- DriverFTDI USB serial driver for macOS 10.13 and olderLegacy kext installer; unsigned, so it has to be opened via right-click and then allowed in Security settings.macOS
- Official guideDownloading dives on WindowsCovers registering the computer in DiverLog and running the cable transfer.Windows
- Official guideDownloading dives on macOSStill published, but the Mac application it describes is no longer distributed.macOS
Every link goes to Aqualung’s own site and was checked before publishing. If one has rotted since, tell us and we will fix it.
Aqualung i450T: common questions
Can I connect the Aqualung i450T to my iPhone directly?
No, and no app can change that. The Aqualung i450T transfers over serial cable only, a connection iOS does not expose to apps. Anyone promising a direct wireless download from this model is describing a different computer. The one-time cable route above gets every dive across.
Which cable and drivers do I need on a Mac?
Use the Aqualung interface cable made for this model, not a generic charging cable: the data pins differ. Most of these cables are USB-to-serial and need the driver for their chipset on macOS, usually Silicon Labs CP210x or FTDI. Install the driver, reboot, and the port appears to the desktop software.
Do I have to do this every time I dive?
Only if you want the new dives in digitally. Many divers do the cable run once to rescue their history, then log new dives directly in SeaLog on the boat, which takes about as long as filling in a paper page.