Portserver TS 1 MEI Realport Port Sharing

I have a TS 1 MEI with Firmware Version 82000716_H. What post and firmware do I need to enable port sharing so my 2 servers can access the same port?
Thanks

Please update the firmware to 82000747_V1 firmware

http://www.digi.com/support/productdetail?pid=1954&type=firmware

and also refer to the release note

http://ftp1.digi.com/support/firmware/93000444_V1.txt