how are you able to get v5.0 for a curve 8330
Go to www.blackberry.com and then select Apps and Software. You should be able to find Blackberry Device Software v5.0 from there. Good luck
Done that. shows 4.5 as the latest with verizon
Try selecting Boost Mobile as your vendor. I believe they distributed a v5.0 OS (220.127.116.118) for the 8330.
1. Download the above OS file to your PC then install it to your PC by double clicking the file you downloaded. (Vista users be sure to right click on the .exe file and select "Run As Adminstrator.")
2. Go to c:\program files\common files\research in motion\apploader and delete the vendor.xml file.
3. Plug in your BB to a usb port and double click on "Loader.exe." It's located in the same folder as the above vendor.xml file.
Don't disconnect your BB unless you get an error message, or you get a completed message. Some of the upgrade steps take a while, and it may appear to have stalled or stopped, but it has not. Be patient, and let the update load (30 - 45 minutes).
Hope this helps