Default [Q] Flash back to sprint from cricket?

Hello I have a S3 from sprint that has been flashed to cricket.

It has a clean esn and everything, I would just like to use it on Sprint again.
I have searched google and xda but ive only found one post about it that's pretty vague.

Is there any write ups of anything on how to flash it back.

Or can someone help me out?

I have already flashed the PRL back to sprint.

I would like to flash it to stock.

forgive me I am new to Samsung and flashing.
Im coming from an htc.

any help would be appreciated my me and aybody else that happens to read this.