Base 100 image firmware can be used across all platforms (apart from unleashed), but you need to issue the "set discovery-agent enabled" command for them to join ZD/SZ/SCG - on certain AP's the discovery agent is enabled by default, but I have found that certain AP's do not have it enabled.
On the SZ and SCG platform you also need to allow ZD coded AP's to join using the lwapp2scg policy.
If you have not enabled this function through the UI on initial set up of your SCG/SZ, you have to do the following on the SCG/SZ cli:
If your unsure if you have enabled it or not, you can run the following command to check:
Note: before connecting the AP to the network it is advisable that you issue the "set director ip X.X.X.X" command, as if you have both a ZD and SCG/SZ on the same network, the AP will prefer the ZD ahead of the SCG/SZ.
Note: Base 100 images are required on ZD's that use code 9.10 upwards