Good morning all,
 
First of all thanks in advanced for your help.
 
I have a new Brocade 300 switch for a Metrocluster enviroment. This new switch has a FOS version 7.2.1 and the other 3 old switches has the 6.1.1a.
I'm not able to find if i can do a downgrade directly from 7.2.1 version to the 6.1.1a version.
 
Could someone help me?
 
Best regards,
Luis Miguel