So following the instructions on the post you linked to:
- download http://download.moddevices.com/releases/user-reset/modduo-legacy-v188.8.131.524-factory-image.raw
- download https://github.com/moddevices/CT_NandBoot/archive/master.zip and extract the zip file
- “cd” to the directory where the zip got extracted to
sudo ./bootfix.osx -w /path/to/modduo-legacy-v184.108.40.2064-factory-image.raw
At this point it looks like the script stopped running. I see
libusb usb_bulk_send error -7 (= LIBUSB_ERROR_TIMEOUT)
in my stdout. Tried it again and got:
Speed = 480 Mbps
Expected 12Mbps, continuing anyway.
Start stage 1
usb_bulk_recv error -8 (= LIBUSB_ERROR_OVERFLOW)
I went ahead and unplugged the Duo (power and usb) and then re-powered to see if by chance the update worked anyway, but no dice.
I’ve had no problems with that USB cable before, but just to rule it out I tried it again with another, shorter USB cable and this time it looks like it worked. I saw
End of stage 2
Feeling optimistic, I unplugged power and usb, then plugged power back in and waited. However it’s been over 20 minutes and I don’t see any indications that the Duo is doing anything…no green lights, no red lights, no blue lights. The display shows only the logo. I tried plugging the USB back in and going to http://192.168.51.1/?v=220.127.116.112 but the request times out. Tried pinging 192.168.51.1 but that times out as well.
FWIW I’m using a USB 2.0 connection from the Duo directly into the USB port of my 2015 Macbook Pro. I am running Catalina so I had to follow the step here: How to run bootloader or factory restore on MacOS Catalina