Are your mip settings exactly the same as this?
MIP Profile
Number of profiles: 6
Active user profile index: 0
MIP_MODE: Mobile IP Prefered
MIP Reg Retries: 2
MIP Reg Retry: 1750 ms
MIP Pre-Reg Timeout: 0
Mobile Node-HA: Enable
Send A Reg: Disable
Dormant Handoff Opt: Enable
MIP Default Profile
Enable Profile: Enable
NAI:
mynumber@vzw3g.com (MDN@vzw3g.com)
DUN NAI: (leave blank if there is not shown on all models)
MN HA SPI Set: Enable
MN HA SPI Value: 12C
MN AAA SPI Set: Enable
MN AAA SPI Value: 0 (requires a "2" here for 6800 and 6900)
Reverse Tunneling: Enable
Home Address: 0.0.0.0
HA Shared Secret: (erase whatever entry is here leave blank)
AAA Shared Secret: (erase whatever entry is here leave blank)
Primary HA Address: 255.255.255.255
Secondary HA Address: 255.255.255.255
DMU Pub Key: 10
MN Authenticator: 0
If your Ha & AAA are blank and your settings are exactly like this your secrets will be written this first time you attempt a data connection and it should connect and write your secrets. If not call vzw tech support and tell them you did a hard reset and data wont work and ask for a DMU reset or change phones then do a data or mobile web connection then change back that fixes it sometimes too.