exsi 4.1 upgrade to 5.5

hi can someone provide the best plan of attack to upgrade

I have an ibm server 3650 that is running exsi 4.1 local storage.

I like to upgarde it to 5.5.

can I do an inplace upgrade of this host. what would be the recommended steps in getting this done.

thanks for any info / recommendation you can provide.

thanks

dave