Hi Fred, I am having the same exact issue. I rooted my Evo for wifi hotspot, but now I dont care for it, because I never use it anyway. It was sooo simple to root with Unrevoked 3, and now I feel like the world is coming down because I cant un root! LOL help please.
email me if possible jnl813 at gmail dot com
Best to keep the info public on the forum in case it can help someone else. But if you want to un-root, click on the link at the top of this forum to get to the Dev/Hacks forum and follow the guide for unrooting your phone and returning to stock. If you get stuck, ask a question in that thread just to keep it all together.
@thefredelement thanks for responding to my problem. I rooted the phone for the hotspot of course and to get rid of the ads and a few other reasons. NO, I haven't tried a custom rom but I will. Will I loose wimax with a custom rom? I think a read somewhere I would...anyway point me in the right direction and I will move on it. Thanks!
Alright, now the fun begins! You will not lose WiMax, in fact almost every custom ROM available is based off of what Sprint/HTC made, that being said you can get the latest update just rooted so you can use your own tethering app and have everything else stay the same.
I've never rooted with Unrevoked3 (call me old fashioned), so we'll need to find out a few things. I would suggest that first you install "Rom Manager" from the market so we can see if you have a custom recovery installed and/or enough access to install one.
A recovery is a section on the Evo that lets people (htc / sprint) transfer files to fix the phone in the event of a total meltdown, when you root you can flash a custom recovery so that you can use it to install custom software (ROMs/system apps) as well.
When you install Rom Manager it will tell you what recovery you currently have, lets take it from there.