Root Will this bring me from cricket back to sprint?

[Arkain]

Sorry to have registered just to ask a question but I am in need of an expert opinion as I don't know quite enough about how network affiliation actually happens on a smartphone.

here the situation I current have an HTC evo shift 4g that is running android 2.2 and is flashed to cricket and is currently working on cricket minus MMS.

I am want to get on my brothers sprint plan with this phone, in effect I need to get it flashed back to cricket.

I found the thread on XDA about RUU_Speedy_Sprint_WWE_1.17.651.1 with a solution for unrooting and restoring phone to default but my question is will this be enough so that I can walk in to a sprint store hand them my phone and have them change my number from cricket and let me use everything on the phone without problems?

 

[crump]

I'm not real familiar with flashing between carrier's but I don't think just running the ruu will bring back to Sprints network. Don't quote me on that but I would think your esn would still be affiliated with cricket.

I did find this thread http://forum.xda-developers.com/showthread.php?t=937652 its over a year old so it may be a little dated but it was the first I ran across.