The IBDAP you purchased is already set up as a CMSIS-DAP debugger. However, if you want to flash the IBDAP firmware yourself. It's also super easy.
Flash IBDAP firmware onto IBDAP board
Connect IBDAP to your computer via USB cable, then press RESET and ISP buttons at the same time and release them. A USB mass storage device will be shown up with a single file "firmware.bin". Delete it and paste in the IBDAP.bin file from below, then press RESET button again. Now Firmware flashing complete. You could now start using IBDAP as a debug probe.