Also to add:
I have taken the hex of my ESN and put it into this site to generate an MD5sum from it
http://md5-hash-online.waraxe.us/
I used my
ESN@evdo.jamamobile.co.nz for the HDR Auth U/N
and the first 16 chars from the MD5 generated as the P/W with no luck.
This is using a MD5 generated from my ESN with letters capitalized and non-caps also.
you can gen a MD5 with no data also, as we have no a-key, I wonder if you use the details from a MD5 generated from no data for the a-key part.