On Feb 10, 8:22 am, Geoff Schultz wrote:
Units without an electronic serial number (manufactured before 2002) have
to be sent into a dealer or SCS for the upgrade. I believe that this costs
about $100.

I've got one of those older IIe's and it is upgradeable to III for a
certain number of call signs (four?) without factory service. Still,
these older units are getting, well, old, so SCS may not be doing the
upgrade for them any more.

-- Tom.