The P/N for Digi is 602-1353-ND. The interface is a sparkfun XB explorer USB card P/N WRL-11812.
I also have two XBP09-DPSIT-156 MODULES - p/n 602-1169-156 which plug in to the same carrier and they communicate with the XCTU software.
I tried a recover module and earthed the commissioning pin in case it was asleep. No change.