Rooting, Wi Fi Hotspot and Upgrading Android

[KCHruby]

Ladies and Gentlemen,

First of all, I apologize for this post. I know my questions have been asked and answered, probably hundreds of times. Unfortunately, most of the threads are so long (a few hundred posts) that it's hard for me to glean the information that I need. I hope I can get my answers in just a few replies.

Obviously I've got the HTC Evo 4G on the Sprint Network. I'm not really interested in loading new ROMs, all I need that is out of the ordinary is to be able to use my HotSpot option without having to pay Sprint $25 a month.

Right now, to use the HotSpot, I use the "Temporary Root" option that comes with z4Root Version 1.3.0 and then I use "Wireless Tether" v 2.0.7 and together those two work great for me. I'm not opposed to using the "Permanent Root" option, I just haven't done so yet.

My phone still has Android Version 2.2 because I intentionally haven't upgraded because I'm not sure if Z4Root and Wireless Tether will still work with an upgraded version of Android.

My questions:

If I upgrade my version of Android, will Z4Root 1.3.0 and Wireless Tether 2.0.7 still work? Z4Root was not an easy app for me to find so I hate to upgrade if the version I have won't work.

If I do a permanent root, then upgrade my version of Android, will I still be rooted?

Is it worth me upgrading my Version of Android? Am I missing anything spectacular or do the upgrades have more flaws then they're worth?

Finally, one last request. As you've probably figured I'm definitely not an expert--I probably know just enough to be dangerous--so if you could put your replies in easy to use terms, I'd appreciate it.


Thanks in advance for your assistance.

KCHruby