What I did:
1. Go to
www.corolada.com/prl (using your mobile browser is the wisest)
2. Look for you provider and select the prl you want and save it to your preferred destination, whether it be your device or storage card doesn't matter.
3. After it is saved open the dial pad and press ##778# for sprint users.
4.Assuming you have your msl for your individual phone enter it and press ok
5.Press menu>edit>browse>search for the PRL you just saved and select it>press ok
6.It will ask to reset and select yes.
7. After it reboots, select start>settings>device information, look for the prl version and see if it matches the one you downloaded.