It's listed as "code downloader.zip". Run the TFTP server as administrator, otherwise it will give you an error. https://discovery.app.box.com/s/n8qqddut8c35rkmdylhi

Is there another password for the D9858? I have a bunch of them that are on factory settings, new out of the box and 1234 / 8390 won't work.

Mine did the same thing but during the power sequencer upgrade, it cut out after it reached 100% and now does not POST. I'll probably wind up pulling whatever chip it may be and reprogram it with a prom reader, the problem is finding the sequencer up...