I can tell you one thing about EU releases.
1.21EU A4 is what i got.
Nothing works all the way up to 1.31EU on hardware A4 - Portforwarding, Virtual Server, DMZ.
Using www.portforward.com as reference and the PFtool provided.
FTP running from my NAS is not going to work on a DIR-655 from outside in.
After I returned the first DIR-655, the second had same revision and firmware and problems...
Next time, remember to buy anything else - it seems to work for most hardware vendors, exept D-link.
I'm shocked, angry and disappointed.
I will return this and again again until the store has no more left.