First off, andorid newb here so be gentle
Here is the issue I am having right now. I followed toast's method of rooting my evo but would like to restore it back to stock.
I tried downloading HTC Sync (Update: i don't have any versions on my computer but would the stock version that was on my SD Card do the trick for all intent and purposes?), (which I keept getting errors on that page that you linked so if there is a mirror or some other means to download that would be great) and i have the RUU downloaded that you suggested.
If I back this up will that enable me to get the Froyo upgrade OTA?
Also i had heard that a sprint store would be able to install the update if you take it to a store. Would the be able to tell that the phone was rooted or unrooted if this method is followed successfully?