Hey there, did you find the solution.
I'm having exactly the same issue except that my helix lt is brand new, came with the firmware 2.30.0 and I downloaded the latest version available of HX edit 3.11
Did I do something wrong regarding the process?
When I plug the helix direct to the usb of my laptop (no hub), nothing appears and hx edit indicates "no device".
Any input appreciated;
Boogie