My JTAG probe XXX is not supported, can you add it?

Unfortunately not. The xPack OpenOCD is only a binary distribution of the standard source code OpenOCD, and does not intend to add new functionality. Please use the official OpenOCD support channels to ask for new features.

I cannot find a connection script for my board XXX, can you add it?

Unfortunately not. The xPack OpenOCD is only a binary distribution of the standard source code OpenOCD, and does not intend to add new functionality. Please use the official OpenOCD support channels to ask for new features.

libusb_open failed: LIBUSB_ERROR_ACCESS

You are using GNU/Linux and your user has no permission to write to USB. Please review the install page.