Cannot Upgrade Firmware Past Ver. 8151 [Solved]

[JamesWilliams]

I can't upgrade my HP Prime to firmware ver. 10077. I've tried all the suggestions I've seen here and at the HP Support Forum (h30434.www3.hp.com):
1. Deleted the Connectivity Kit and the Virtual Calculator and reinstalled. The Connectivity Kit's "Upgrade Calculator" option just reinstalls firmware 8151.
2. Tim's suggestion to upgrade in recovery mode (hold down Symb, insert paperclip). Still just reinstalls 8151.
3. Tried many different USB ports.
4. Tried to go to http://ftp.ftp.hp.com/pub/calculators/Prime. None of my browsers let me go there.
5. Looked for drivers at hp.com, which has the Connectivity Kit but no firmware to be found.

Please help. My calculator is stuck at 8151.