New Teensy 4.1 has [no_device] error on MacOS 10.14.6; Teensy 3.6 and 4.0 all work

[W5UXH]

I received my first Teensy 4.1 today. I always verify the "factory" Blink appears to be working for each new board and then program a different blink rate to verify that download works. When attempting to select the port in Teensyduino 1.8.12 it shows this:

[no_device] Bootloader (Teensy 4.1)

I tried this several times, disconnecting and reconnecting the USB cable. I then verified that the Teensy 3.6 I am currently using works, and then tried the one Teensy 4.0 that I have. It also works.

Is there a chance that the "15 second" reset might fix this? I wanted to inquire before trying it.

Can I provide any other information?

[defragster]

Not yet seen Harm from 15s Restore. It reloads a no USB Blink factory sketch.

Then like new - the first upload takes a Button press to get to bootloader and facilitate upload as it comes as noted without USB.

[KurtE]

What version of teensyduino is installed?

[W5UXH]

Teensyduino 1.52 is installed.

But I finally got it working. The 15 second reset worked normally. I then stumbled through multiple iterations trying to get the load to work. It was probably a matter of my finger pressing the reset to get to the bootloader, I'm not sure what was going on, but I finally closed the Teensy loader and tried one more time and the loader opened back up and when I pressed reset one more time it started working.

Thanks.

[PaulStoffregen]

Glad it finally started working.

The "[no device]" part means MacOS detected the USB device, but didn't load HID drivers and create a HID entry in the MacOS I/O Registry (or if it did, the teensy_ports program didn't get a notification about the change). Why that would happen is a mystery to me.