Thanks for the link but indeed I followed all of the instructions and there was no mention of having to shut off my Helix LT and restart HX Edit and it also mentioned and shows a screen that was supposed to show up on my Helix LT screen showing "Boot Failure entered update mode" which never appeared. This occurred AFTER I shut off the Helix LT and shut off and restarted HX Edit. I then got the message part 2 of the firmware update had begun and ten minutes later the message "Boot Failure entered update mode". So in my case I needed to shut off the Helix as per instructions in HX Edit which was not mentioned in the firmware update instructions for 3.50. This is either an oversight in the instructions or a problem only I had. Perhaps it may help someone.