Same thing happened for me last Thursday, but used a different usb port and the update went through. My normal port stopped responding to the helix, but worked for the PC+ update. Was going out of town over the weekend for a gig, ran into a few of my go to presets that didn't work in 2.80. Reflashed the 2.80 FW with the working usb port, and it did not stall, as it did not have to totally blast the first portion of the firmware to replace 2.71. Anyway the same presets still went wonky. Ran out of time to mess with it, so I had to roll back to 2.71 and restore my backup, again with the working usb. The wonky ones on 2.80 worked again on 2.71.FWIW, I'm a pretty experienced Helix user, and I read and followed the instructions very carefully, but hit some snags. I was using the same USB port I use for all things Helix, the only one that works for that for some reason.
The updater hung in the middle as semi-expected. I restarted Helix and the updater, but it couldn't see my Helix to continue. Restarted both again several times, in various orders, no joy.
I remembered that some other folks had had that happen, so I went looking for posts here saying how they got past it. Before I found any, at some point maybe 10 minutes later I looked back at the updater, and my Helix was showing, so I just continued from there. Rest of the update went fine.
Should I report this to Support do you think?
The new drives are the berries! Haven't spent enough time with the new amps to have an opinion.
Got back this afternoon, and had read about folks regaining their normal usb port with a reboot of their computer, so I tried that and connected the helix to my normal usb port, and it did recognize the helix, was able to connect to it with HXEdit again, so tomorrow when I begin trouble shooting, I should be able to do the 2.80 fw update without needing to stop midstream this time. Will probably need to recreate the wonky ones, so will need to write down the snapshot controlled parameters on those, will be a pain, but at this point, no real alternatives that I see. I have another out of town gig next week end, so will have more time to dig in this time, hopefully with better results.