LG TM-510 Firmware Upgrade

I have the lg tm510 and have been getting alot of dropped calls. I brought the phone to a verizon store and they upgraded my phone to a new firmware, # T51VCU0D I was wondering if anyone new about this firmware and if it has any new features. I noticed that the browser in the firmware is not openwave and not phone.com. Also my prl changed form 10012 to 10013. I have the Verizon SRE plan. Was wondering if anyone knew the difference between the two prls

 

Yeah the dropped calls have stopped, and just for everyones info, the browser which is supplied by openwave came loaded with a mobile web IP that is not verizons and i have free mobile web without paying for it. It works just as well as regular mobile web, and it just deducts from your regular minutes. Let me know if u want the IP and port number.