Currently I work with VisualGDB and STM32 – it’s great by the way -, but now I have to update a firmware on a old PCB that we have, and it’s a PIC18F4550 with USB.
I’ve found a tutorial by using PIC32, but can’t make it work with my 18F.
Sorry, these are legacy devices with not that many active users, so we do not support them.
You can probably get it working by figuring out the correct parameters for the underlying command-line tools and manually configuring VisualGDB to use them, but it would be something for you to figure out.