Dell certified drives not activating in MD3820i

I have an MD3820i that I have filled with Dell branded, Seagate-manufactured Constellation.2 drives, p/n #ST91000640SS, DP/N #09W5WV

Two out of the batch power up but won't let me administer them in Modular Disk Storage Manager. I get an error when I try to upgrade their firmware that says Error 249 - The physical disk firmware download operation failed because one or more of the physical disks you selected has a Bypassed or Offline status and is inaccessible. Please make sure the physical disks you selected do not have a status of Bypassed or Offline, and then retry the operation.

I don't have another compatible SAS enclosure handy to use to troubleshoot further. We are trying to get replacements from our reseller but is there anything I can do to fix these? They all appeared to come with the same fw version but these two just won't activate and I'd really like the capacity I paid for. I have to rack the MD very soon so if I can get them online before then it'd be pretty great.

Everything I can find online is about people trying to use 3rd party drives in an MD but these are valid Dell branded drives so I don't understand what the problem is unless the drives are just bad.