What Country/State/Province do you live in? UK
Modem brand & model number: Netgear DGN2000
Router brand & model number: As above
If Wireless, are you using a white or black external adapter, or an internal (Xbox 360S) adapter? Xbox 360S w/ built in Wi-Fi
Things you have tried:
I have a netgear DGN2000, has worked flawlessly for two years. I lost connection during a BF3 update but internet connection remained. This was Tuesday night and it hasn't worked since. On occasion I am able to sign into xbox live and a system update notification appears. When continuing the system update tries to download, after around 10 minutes or so the download fails. When testing the connection on the xbox I can connect to the network, also the internet, however no xbox live connection can be made. Again, very rarely, I am prompted for the system update if it does establish but again this downloads, fails and reverts back to the dashboard.
There is no issues with the internet connection on the laptop but it is incredibly sluggish on occasion. I have attempted to remove, test, re-configure all necessary ports as well as testing dmz, upnp, dns and static routes to no avail. I have also attempted all variations mentioned on two separate routers being a d-link and a thompson again with no success.
I have also gone through troubleshoot with xbox support. This included, MTU settings, removing the hard drive, reverting firmware with (LB, RB, X x2), clearing cache, using a usb stick as a storage device to download the update, using a usb and a cd-r to attempt to install the firmware update. The firmware update however was from February and I have obviously had that firmware hence having an established connection until 17th April. The original symptoms included, failing game update as opposed to system update, also a limited dashboard with all marketplace content removed. Marketplace was temporarily brought back when the market place system data file was deleted however the problem has since returned.
Do you have a NAT error? If so, what is your NAT? NAT is OPEN
Any Error Codes you encounter: 397F - 000 - 3080 - 0502 - 8007 - 2EE2
After you run "Test Xbox LIVE connection" press “Y” for "More Info”. In the pop-up that appears, what are the following values, if shown? (If a value below does not appear for you, just leave it blank.)
W: 000 - 0021
X: 000 - F001
Y: 20A8 - 4860
Z: 8015 - 1918
ID: 0006 - 0000
L: 0015 - 10F1
Q: 0015 - 10F1
T: Wireless (Though I have tried Wired many times to no avail)
D: 192.168.0.1, 0.0.0.0
S: WPA2 (Though I have tried WPA also)
Guys at support went through everything on the phone, took about 3 hours in total. I have had a secure connection for years but only within the last two days have I been experiencing issues. I have contacted ISP and they won't acknowledge it is an issue on their end even thugh it seems a huge coincidence that myself and two other people in my street have lost connection via the xbox, we are all with virgin, have different routers and still have a connection established via PC/laptops.
Any help would be great as I have spent many, many hours trying to resolve this so far.