If you're asking for a Beta version you won't find that here and it is also a PinStack Rules violation to ask for or distribute it.
But you can find Official versions Here.
I have a 8310 Curve, and all I want is the link to the O.S. 4.5
If anyone knows where to find it, please let me know
Thanks so much. I found what I needed
Glad you did
Let us know if you need any further help and how it goes.
Thanks, that helped me too