With HS4, I added the Silicon Labs software (SL) as a secondary controller with “Send Network Information to Another Controller”, and on the SL software, with “Classic Learn Mode”.
When done, the SL software has all the SL devices, and tested some devices in the network to respond to the different commands from the SL software, but the Series 2 Red Dimmer doesn’t, and so I cannot upgrade it. I don’t know if it has to do with S2 security.
I used the same version of SL software (5.39) to upgrade the switch FW (both banks to FW 1.47 and all went well, but I want to avoid removing the dimmer from HS4.
Also, I could not upgrade the (Bank 0) FW using HS4 alone because the FW upgrade does not start on the dimmer.