You will need to get the MSL code for each phone, then go into EPST settings and edit the MDN and MSID. Get the proper MSID and MDN numbers from your carrier's tech support, as you have already flashed the ROMs and overwritten those numbers.
Go to the first post in this thread:
An Easy Guide to Upgrading
If you are on Verizon, your MSL is 000000; otherwise, perform Step 2 under
Retrieve Provisioning Data:
of that post to obtain your MSL (or you might be able to get the MSL from tech support also). Then, no matter what carrier you have, perform steps 8 and 9 under
Verify Provisioning Data: to update the data.