Ok, I originally rooted my Evo using Unrevoked3 and it's been rooted for a few months. I had to unroot it two days ago to take the phone in to get the earpiece speaker replaced on my insurance. I flashed Unrevoked Forever and tried to unroot my phone using the Rooting for Dummies section on this site but I couldn't get it to unroot, it wouldn't flash the PC36IMG zip afterwards, it kept saying "Main version is older, Update Fail". I tried a different one that was suppose to be for HBoot 2.10 and up but still wouldn't work. I had the S-On like it said it needed to be.
So I finally got it to unroot using the RUU Windows method HTCEvoHacks.com shows. While it was in the Sprint store they updated it to 2.3.3. Being I had this phone rooted before with Unrevoked3 and had flashed Unrevoked Forever prior to unrooting it and receiving the OTA update, can I reroot it again or am I stuck till someone finds a way??