Customer has an 1801 running 15.0(1)M8 c180x-broadband-mz.150-1.M8.bin.
When they try to configure EEM from conf t they get an unrecognized command error.
Feature Navigator shows EEM as available in 15.0(1)M7. But Feature Navigator itself doesn't support M8. If you search for c180x-broadband-mz.150-1.M8.bin you get the following message "The Image Name you entered does not match any supported Cisco software releases in this tool. Please change the Image Name and search again. Thank you."
EEM technology notes say 3.1 is supported in Cisco IOS Release 15.0(1)M and later releases.
I guess the question is does M8 support EEM or is this a bug or do you need a license or similar to enable EEM functionality?