Yeah I had this problem but she's fixed. No need to upgrade the firmware me thinks.

1) Type in "192.168.1.1" into the address bar of your browser. The log in page for your browser appears.
2) Enter your password - by default this is "1234", but you might have changed it. If you have changed it before log in with that new one.

A page should load with a lots of boring information. On the left side there should be a panel of stuff, what you want is "advanced settings". If advanced settings IS there on the left go to step "a" below. If advanced settings (or in fact anything) IS NOT down the left proceed to step "b" below.

a) Happy days. All you have to do is click the "+" beside advanced settings to expand it, then select UPnP. Then just click ALL of the boxes (there's 3 of them I think). That's it.

b) You are logged into some sort of stupid mode where you can't change anything. All you can do is refresh the page or log out. This is probably because you entered "1234" as the password, but in fact this password has previously been changed by you or someone else. So go back to the log in screen (192.168.1.1 in the address bar) and put in the one you changed it to, if you can remember it. If you do remember it and log in successfully (successfully being that you can see "advanced settings" on the left), go back to step "a" above. If you still can't get to that page it means you don't know your password. So you're going to have to reset your router. Go to step "c".

c) Resetting your router. Turn the router off. Then hold the reset button for 30 seconds and power on the router at the same time. Now I think you'll have to set up your router again like when you got if first, to connect to the internet, so do it. Then log in to 192.168.1.1 again. This time the password "1234" should bring you to the proper screen with advanced settings. If it does go to step "a". If it doesn't go to step "d".

d) You'll have to default reset your router. Turn it off. Turn it on and hold reset for 15 seconds. Some light will flash. Release button and let it reboot. Now log in to 192.168.1.1 again. If it works and you can select "advanced settings" go to step"a". If you STILL can't see advanced settings you're at the end of the line and I don't know what to do. Contact your provider or something.

If you haven't done this already...on your ps3:
Open up network >> internet connection. Choose wireless/wired - whichever you want. Choose "Address settings" - "custom", "IP address" - choose manual.Enter these:

IP address - "192.168.1.50"
Subnet Mask - "255.255.255.0"
Default Router - "192.168.1.1"
Primary DNS and Secondary DNS same as default router.

Then enter than. Don't know what MTU is (it'll come up next). You're done.

Sorry for my english i am polish

in your ps3 set manual settings pppoe in (ip setting)password &user name rest options disabled or automatic

in router network--wan--advanced setup: zero configuration and pppoe passtrough set as YES---apply
next thing is :

network---nat---active network addreses translation UNMARK (in the same moment when ps3 is turned on and connected to router you will see that on your ps3 on Network settings---settings and connection status list ) now wait if you did everything correct on your ps3 you will see your ip address instead of Automatic oh another thin you will get NAT1 !!! its better the nat 2 none restrictions post me if you have firmware of your router i have diffrent problem and need firmware
my nat1 solutions sometimes its not working just mark and unmark couple of times(snd press apply) and it will connect i am liv in ireland hope you not have digiweb :P

1 Reboot router, 2 Open browser and type into top bar 192.168.1.1 hit enter, 3 when window appears, erase 4x dots and type in 1234, 4 new window opens asks for new password, if you want to do it later press ignore ( if doing later redo steps 2 & 3) 5 new window opens this time with menus on side, select which you want. ( best take screen shots before changing anything) Enjoy