when trying to upload the firmware, i get 2 messages in the DFU
1st, to connect and hold down both DFU and start ect..
After hitting return, i get the 2nd message "dfu suffix does not match
A valid dfu suffix will be required in a future dfu- until release!!!
Deducing device dfu version from functional descriptor length
Cannot item dfu device 1fc9:000c
No dfu capable USB device available
when trying to upload the firmware, i get 2 messages in the DFU 1st, to connect and hold down both DFU and start ect.. After hitting return, i get the 2nd message "dfu suffix does not match A valid dfu suffix will be required in a future dfu- until release!!! Deducing device dfu version from functional descriptor length Cannot item dfu device 1fc9:000c No dfu capable USB device available
Press any key to continue"
How do i fix this?