Yeah that's correct. But if you are talking about the. 15 radio wasn't there a 605 AIO download link in that thread? Once you sbf to Froyo you should flash the aio and it should bring you back up to 605 but with the 15 radio intact.
It mentions sbfing but that is for future use.
About the link, I don't think being a member has anything to do with your ability to download. That's weird though.
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