Franck,   It does look to be on our end, while the newer one is present in the catalog for some reason it is only applying to the 14th generation. I am submitting for correction, but can't be certain when it will be completed.   
Hello, Since a few weeks now (can't really find out when), for my x30s, there is a very old firmware "downgrade" proposed by Dell OME :  [IMAGE] I found a newer one available since December 2022 but it doesn't show up and anyway, such a downgrade is my opinion not OK : [URL] Thanks in advance for you help 
x30 series - Very old NIC firmware available in OME catalogue