After Firmware update unable to see data or recover

HI Everyone,

First time poster hoping some kind person can help. Had a client of ours come in yesterday with a 4TB NAS Raid 5 configuration, after he flashed the firmware he is unable to access his data. He spoke to WD support and was told he cannot recover his data. So we have his NAS here and have tried to view the drives with R-studio with no joy. Have downloaded WD Sharespace Ver-135 hoping this will be a starting point. Any suggestions would be greatly appreciated.


 have you tried connecting the drive to a linux system to see if the drives show up?