first off,sorry for the late response,seem to caught a bug and when i got home from work fell right asleep
sorry about the file factory link,here is an alternate:
Directory listing of http://androidfiles.org/ruu/Ace
the shipped roms link was still working for me,it should take you to a directory of RUUs.
you will want to upgrade somehow,as this process will leave you on an old,outdated rom and firmware. while it is possible to just upgade the radio,i usually recomend to upgrade the entire ruu,wich sill update all firmware. it will also wipe out the custom recovery,but thats not a big deal.
its easily added later when your s off.
you can. root access is the important thing. my new guide will include htcdev unlock,becasue of the unreliable temp root methods for various builds.
looks like you did not properly create the gold card wich is needed at this point to flash the unbranded downgrade RUU. the gold card is prolly the trickiest part of this... just follow the directions carefully and hex edit the image you get to the sd card that you wish to use.