If you already have data working and have a backup of cdma_sec, skip directly to step 1.

Follow this guide to get 1X data working first:

http://mark.cdmaforums.com/Monster1.htm

NOTE: Back up cdma_sec from the VZW firmware before doing anything, the backup has to be made while EVDO data is still working.
NOTE #2: Many reports have said this guide only results in working data after doing using the ESN changer to reprovision data OR calling CS to get it reprovisioned that way. Once data is working completely over 1X, move on to this next step.

1. Open your backup of cdma_sec in a hex editor, I personally use Hex Workshop, but Winhex or others will work as well. Use the instructions contained in these two images to copy your HA Shared Secret and AAA Shared Secret keys.

http://img187.imageshack.us/img187/...edsecretme6.png
http://img75.imageshack.us/img75/51...edsecretse5.png

Of course on your particular backup the string won't be all A's and all B's, I used them to clearly point out exactly what you're looking for.

2. Open QPST's Service Programming and select "Load from Phone"
3. Move to the MIP tab, and select the User Profile that contains your10digit#@vzw3g.com, then hit Edit
3. Select "Enter hex value" on both HA Shared Secret and AAA Shared Secret.
4. Paste the two strings you copied before into the proper location, hit OK, then write to phone. Once these are written the two fields will switch back to "Retain last value" if you read from phone again, but the strings will be written to cdma_sec so "Retain last value" means it will use them.
5. Copy 10.key (http://rapidshare.com/files/10261420/10.key.html) to /DMU/

EVDO data should work now.