add iDrac8 port card. PowerdgeR430. How to switch configuration

Hello,

I bought an iDrac 8 Express card (Entreprise license) for my PowerEdge R430.

1) installation is pretty easy
https://www.youtube.com/watch?v=zzea08mD6Rk
http://topics-cdn.dell.com/pdf/poweredge-r430_Owner's%20Manual_en-us.pdf
(p 87-88)

2)but how to switch from old configuration (basic licence/ Nic) to the 
new iDrac8 Entreprise?
I tried to reset iDrac settings
   - from menus
   - press & hold the "i" button on the front panel more than 15 s (as 
described in the R430 Owners guide)

... no way !

did I omit something?
Thanks in advance for help
Philippe