Sending and receiving 455 kHz infrared codes from B&O on Mac

[foufouner]

Hello,
I'm starting this thread because I'm having a major problem. I just switched computers and upgraded to macOS Tahoe.

Before switching, I used an IrTrans USB with the iRed2 application.

The problem is that the iRed2 application is no longer being developed, and I can't find the latest version, which was 2.5.2.

So my question is: does anyone have version 2.5.2 of iRed2? Is there any way to send or receive IrTrans codes at 455 kHz b&0 on macOS?

Thank you.

[The Robman]

According to Copilot, even if you could find an old copy of 2.5.2 of iRed2, it wouldn't work on MacOS Tahoe. Furthermore, IRTrans has not been supported since MacOS Catalina.

Copilot detailed 3 realistic options for you:

Option A: Run iRed2 + IRTrans inside a macOS VM
This is the most realistic path.
- Install macOS Mojave or High Sierra in a VM (UTM, Parallels, VMware).
- Install the IRTrans USB driver inside the VM.
- Run iRed2 2.5 (or 2.5.2 if someone provides it).
- Pass the IRTrans USB device through to the VM.
This works because:
- Mojave still supports 32‑bit apps
- IRTrans drivers still load
- USB passthrough is reliable

Option B: Replace IRTrans with modern hardware
If the user’s goal is simply 455 kHz b&0 IR, there are alternatives:
1. Global Caché iTach / GC‑100
- Fully supported on modern macOS
- Works with Home Assistant, Node‑RED, Python, etc.
- Can send arbitrary carrier frequencies
2. JP1 remotes + IR Widget / IRScope
Given your background, you can explain:
- JP1 remotes can send 455 kHz protocols (depending on model)
- IRScope can capture them
- RMIR can generate them
3. DIY microcontroller (ESP32, STM32, RP2040)
- Libraries exist for arbitrary carrier frequencies
- USB or Wi‑Fi control
- Much more flexible than IRTrans

Option C: Use IRTrans from the command line (if the driver loads)
If the user still has an Intel Mac running Ventura or earlier, they can use:
irclient localhost
send <device> <command>

But on Tahoe, the driver simply won’t load.

Copilot did also suggest that Robert Fischer, the guy who wrote iRed2, has been known to send copies of it to people who had previously purchased it. Looking up old copies of his website on web.archive.org it appears his email address is info@tinb.de