Frankly, I find Spektrums PDF instructs very easy to follow. The original post is a train-wreck waiting to happen. Sorry to say, as obviously someone took a long time to write it, but everything in that post is smashed together, and over written. It's not that difficult to update a Spektrum radio... not by any stretch. I've done it a few ways, none of which I'm qualified to write an essay on.

I've owned and read about the DX line of radios for years, and sure there's few glitches people get into when updating, but if they happened upon that first post and tried the likes of an update like that, they'd be lost before they even started. I've never heard that "many" have problems. I could probably surmise one had a problem though.