Hey AliMcK!
This post may be of help!
As suggested in the post, begin troubleshooting by using Web Programmer first (Daisy Web Programmer).
If you encounter an issue trying to flash via Web Programmer, it’s possible that you’re using a USB cable that doesn’t send data. I remember seeing something about this a while back on the forum, I believe.
And if the other suggestions in that post doesn’t work either, let me know! Good luck!!
Please feel free to share screenshots too! Any little detail helps!