The issue here is that the old version of SwitchBlox was discontinued in May 2022 and the new versions no longer support management functions. These functions moved to SwitchBlox Industrial. An announcement was sent out about this but looks like you missed that.
SwitchBlox Industrial ships with firmware pre-loaded, and works with a GUI we have built (here). The previous method of achieving management wasn’t ideal; it required customers to load firmware manually, and due to chip shortages we had to swap the microcontroller halfway through manufacture.
SwitchBlox Industrial is designed to mitigate all of these issues. It always ships with the same microcontroller, it comes pre-loaded with firmware, and it runs a GUI which is much more user friendly. You simply connect SwitchBlox Industrial to a PC running our GUI using a USB to Serial converter, and you can configure it. To achieve these better functions and guarantee of availability, the price is a bit higher on SwitchBlox Industrial.
However, none of that information helps you. Luckily, you can make SwitchBlox work in the old way by simply soldering back on the Microcontroller and its associated parts. The parts you will need are…