I was brought a gen one 3ds for Christmas and it's been working absolutely fine.
But the past few days although I've got Internet access on it my home hub 5 seems to be blocking its connection to the eshop and Nintendo servers.
I've checked the wireless channels and it's connected fine to the 2.4 side I've changed from b/g/n to b/g and back again still no success, is there anything I can do with the firewall, I know it's not the handheld as it connects fine to everyone else's network.
The only thing that I can suggest is that this could be an issue with the needed ports to access the Nintendo servers being closed somehow by your router. I have not come across this issue, however, and have had homehubs 3-6 connected to 3DS devices at one point or another in the past without ever having to mess with any settings.