I have a C8 pro running 2.4.0.146. I have several LZW31-SN dimmers which are on original firmware. This afternoon I tried to update one of them and appear to have bricked it. I am attempting to install the two firmwares. I installed in Target 0 - LZW31-SN_1.57-Production.otz. That seemed to go fine. I then attempted to install in Target 1 - LZW31-SN_1.44-Production.bin The updater uploaded to file to the device and then got stuck saying waiting for the device. The switch is flashing blue and has been for several hours.
I don't have any Reds, but according to this page for the LZW31-SN, v157 is the latest production (non-beta) firmware, so once that's installed, there's no reason to worry about v144 (since it's older firmware).
The instructions indicate two firmwares need to be installed one each to position 0 and position 1. Update instructions
If you are using the driver based updater then I think that is normal. It is saying it finished and is waiting for the device to reboot.
Sounds like the device just got stuck, have you tried power cycling it?
Thank you, power cycling got it back up and running. The firmware 0 is updated. Firmware 1 did not update.