I'm able to change prl and roam on Verizon. Lte roaming does not and will not work since sprint and Verizon do not have an agreement to allow lte roaming. Now here's the deal, Before getting it to work I tried a couple of times with a Verizon .000001 I had saved in my computer and it just wouldn't work. The only way I could get it to work was by watching a video that was posted in the iphone-developers forum and downloading the prl from the link in the video. The steps to load the prl are the same as before, the only difference is that in the iPhone 5 the folder where you overwrite the prl is now called sprint_lte_us.bundle. Just make sure your data roaming is on and that you have tetherme installed. The link to the video with the file is
http://forum.iphone-developers.com/...ailbreak-required-helps-data-speed-issue.html
Btw I'm not sure if this happens to anybody else but while roaming I'm not able to send SMS. iMessage works beautifully but regular texts do not. The same used to happen when I had the 4s.
Thanks man i am actually now roaming off Verizon 3G just follow the directions on the video and it will work I'm getting over 2MBS now i still think there's a way to do the 4G but i'm happy for now thank you!