I believe in your command you used region 7 instead of region 6 which completely wipes the device including the NVDATA. This may be your issue. If so and assuming you didn’t backup this data before wiping you can use the following command to reset back to default.
sas3flash.efi -c 1 -o -resetnvdata
Give it a reboot after and see how things look.
For future reference this is the command I would have used originally.
sas3flash.efi -o -e 6 -cpci 00 *********
entering the pci address of the card where the ** are
Apologies, I know this is an old thread, but I have the exact same issue created by running the same wrong erase command. on my version of sas3flash.efi (17.00.00.00 ) , I dont have an -nvdata command. Oddly, I have the -unvdata to dump the working controller nv data to a file, but cant seem to upload the dump to the broken controller. can anyone clarify the steps ?