Old units:
Model: TransPort WR31
Part Number: WR31-L52A-DE1-TB
Serial Number: 705166
FW Version: 6.1.2.2 (May 18 2018 09:37:43)
Image Number: 0
Boot Version: 7.63u
New units:
Model: TransPort WR31
Part Number: WR31-M52A-DE1-TB
Serial Number: 771810
FW Version: 6.1.3.5 (Jul 17 2018 14:26:44)
Image Number: 0
Boot Version: 7.63u