First off, I have a zephyr jtagged 360.. I first started getting the errors back in 2013 i believe and after no success I just gave up hope.. I thought i'd give it one last go now and hope I can possibly get it going again before fully giving up...
You might actually have a problem.
i lied, one final thing haha.. do you know of any solder noob friendly tuts for this where the pics and all that are still up? mostly everything i find the page is expired or all the pics are.
try on youtube mate.. there are good training videos, showing the proper ways of soldering