Hi Alan,
Sometimes you have to call Garmin customer support two or three times until you find someone who isn't stupid. They can sell you an unlock code to use your 10x with those maps if they want to.
Tip: don't go into a detailed discussion. Simply ask to buy an unlock code to use your 10x with your City Navigator South Africa maps. Have the serial number of the 10x handy as well as the product code for the maps.
There is another option. Do you have a MyGarmin account? If not, create one and register your maps, your unlock code and your 10x. Then you can go to "Manage Maps" from your MyGarmin main page. You'll see your maps listed. If you click on the "Details" link under the name of your registered maps you'll see a number of options on the left side of the next page.
One of those options is "
Unlock additional Garmin unit".
I have this option on all my registered maps going way back to City Select North America v5.02. That was released back in 2003. That was back in the days when you could get a second unlock code for free. Sometimes the old days really were better.
Don't let them grind you down. Either do it online through your MyGarmin account or phone again and don't ask if you can; just assume you can buy the second code and ask what information they need in order to sell you one.
Just for your own self-assurance, here's the official word on unlock codes from Garmin's site:
Quote:
Your MapSource coupon or registration code is valid for use only with your Garmin GPS unit. This agreement provides a one-user license, and it is illegal to share this data with others.
If you own multiple unlock compatible Garmin GPS units, please purchase a unique unlock code for each unit. (See our
Unlock FAQ page for further details.)
...ken...