WP76xx Embedded SIM on mangOH RED

Has anybody tested a mangOH RED with the embedded SIM. When we try to select it, using Release 8 on a WP7603 we see:
root@swi-mdm9x28:~# cm sim select EMBEDDED
Unable to select ‘EMBEDDED’.
root@swi-mdm9x28:~#

Any ideas. I absolutely know the board supports the EMBEDDED SIM.
Thanks

Second SIM is not supported on WP76

Ouch!

Is is hardware or software? We can fix the software.

hardware routing for WP76.