The other night I rooted my Evo with Unrevoked. That same night I flashed Baked Snack 1.9 using ROM Manager. Prior to the flash, I backed up my phone using ROM Manager. It was fast and everything but I decided I wanted Gingerbread (a la Salvagemod). I backed up my phone in a similar fashion, and flashed the ROM once using ROM Manager. When rebooting, my phone became caught in a boot loop. After searching through Google for a few minutes, I learned that I simply needed to clear my cache and my dalvik cache. After clearing cache, flashing, and attempting to boot several times (all in clockworkmod... or recovery... or whatever it is called (yeah i suck)...or whichever one is orange!), I gave up and decided to restore to my second ROM Manager backup - that of Baked Snack. Error! "No files found!" I tried my previous backup. Same message.
Looking back on that, I chose "install zip from sdcard" instead of "nandroid". That was a fail.
So I decided to re-use unrevoked. Everything went fine on the PC end, but the only thing that changed on my phone, is that when it boots, it gets stuck on "htc evo" in the white screen. That and clockworkmod is now teal. I disovered the nandroid option on the recovery menu. I navigate to that, then to restore, then to my Baked Snack backup. This gave me the message "Error while flashing boot image". I tried it one more time, except instead of picking recover, I accidentally picked backup (stupid stupid careless, i know). It failed and said "Can't mount /data/!".
Then I decided to go onto xda-developers and here I am now. If you are through facepalming, I would appreciate it if anybody could help me recover my data. I believe I can still flash a completely new ROM (But what do I know? I haven't proven to be the smartest Android guy), and I don't know about you guys, but I like keeping my data.
So, uh, yeah. That's that. Help please.