Really sorry it's taken me so long to reply to this comment. Unfortunately, there's not much I can suggest here, other than running a checksum on the firmware image file to make sure it wasn't corrupted during the download process. The LSI controller is rebadged and resold by a number of vendors, including Dell, and the firmware isn't compatible between them. It's possible you might be able to work around that by tweaking the firmware - I do remember seeing a few posts on the internet about doing exactly that - but it's very complex and risky. Sorry not to be any help on this!
Really sorry it's taken me so long to reply to this comment. Unfortunately, there's not much I can suggest here, other than running a checksum on the firmware image file to make sure it wasn't corrupted during the download process. The LSI controller is rebadged and resold by a number of vendors, including Dell, and the firmware isn't compatible between them. It's possible you might be able to work around that by tweaking the firmware - I do remember seeing a few posts on the internet about doing exactly that - but it's very complex and risky. Sorry not to be any help on this!