Hi,
I just bought a 2DS2732 with SN: xxxxxxxCCRRxxxxx - an english version?!
Info on box: made 8/2015, firmware: v5.3.0_150513, but after several tries I saw in SADP firmware 5.2.5.
It was possible to get onto the webpage to configure with admin/12345. Disadvantage: no plugin for firefox...