powerconnect 6224 firmware upgrade using GUI

I am planning a f/w upgrade on PC6224, from 3.2.0.7 to 3.3.4.1, mainly to improve PS600 iSCSI SAN performance.  I have found many posts on updating the new f/w via CLI, but do not see any on using the GUI, which looks painfully simple.  Can it really be this easy?

• I used the File Management >> File Download in the GUI to download the 3.3.4.1 image file using HTTP from a management server.
• In File Management  >> File System, image 2 now shows as present and is indeed a different size than image 1
• In File Management >> Active Images it shows image 1 as version 3.2.0.7 as active, and there is a "After Reset." pull-down to choose image 2.

So do I just choose image 2 and reboot the switch (not stacked) and the new f/w loads?  The life-long history of my luck would dictate that this is too easy, but maybe I caught a break?

Would also appreciate any imputs on using the Dell R710 as esxI 4.1 hosts with Broadcom 5709 iSCSI adapter .  Software dependent vs. Hardware dependent, which I understand cannot support Jumbo Frames?  Basically I am chasing down only nominal SAN read speeds (experience via backup, file transfer, etc.) but can get blistering write speeds writing from a physical server down to a SAN volume.

Thanks in advance