When updating the firmware of a device, it is also necessary to update the device driver. Be it dedicated driver or ASCOM.
This is because otherwise there is a risk of malfunctions given that the communication layers of the two software are misaligned.
Firmware is the software that the electronic device needs to work and is on the electronic board of the same.
Driver is the software that is on the PC and is used to communicate your operating system and other applications with the electronic device and therefore the firmware.
For your info, if you have doubts or needs in this sense, the correct place to express them is the support email and not the forum which, having no active filters, can provide incorrect information to users.