Default [Q] Help unlocking

This is my first post. Please forgive me if this is in the wrong place. My Verizon phone finally died on my. A friend gave me his Motorola Photon 4g running 2.3.5. I've been trying to figure out how I can use this on Verizon. It was on Sprint. I looked at tons of unlocking messages and videos, but nothing seems to work. I read at the top of one forum that 2.3.5 cannot be unlocked. All of the posts seem to be a coupe years old. I am wondering I there is now a way to do it. I you can help e out, would realty appreciate it.
Thanks