11-27-2012 12:08 AM
11-27-2012 12:12 AM
11-27-2012 03:40 PM
11-27-2012 07:07 PM
From what you describe, I suspect one of the following 4 possibilities:
You should be able to get it to load up...there must be a reason why, and you are correct that the 507 is normal (though, not at the point you received it...deleting VENDOR.XML files happens BEFORE you even start any of the WIPE/RELOAD process).
You might get some use from this KB:
Give it some more tries and let us know!