Alternative Firmware

Hi all ime working on turning my blinkstick pro into a v-usb bootloader so i can just upload code via usb and use it as a ws2812b led tester,but cant get tinyavr v-usb to work on the blinkstick_pro,ive tryed to alter the usb lines to be correct in bootloader-config with no luck,has any one else got it to run like a trinket or digispark?