Cannot Update Firmware Because Netgear Router Is Owned By VM

so I've recently reinstalled my OS (windows 7 32bit) because I got a BSOD for some uknown reason and it kept booting to NTFS file checker, anyway this is irrelevant.since the reinstall, ive been getting pretty annoying latency spikes. The only game I've got installed ATM is counterstrike: source so no I haven't tried out any other games.My connection consists of a netgear wireless G router routing a 10mb virgin media connection to my belkin wireless G USB adapter.my drivers are all up to date, including the adapter. I cannot update my firmware because the netgear router is owned by VM and they don't allow firmware updates from netgear (I've tried and failed to update) for some unknown reason.

In games, sometimes it runs smoothly, and other times I get really bad latency spikes. It will all be running fine at about 30ping but then it will lag and shoot up to 300/350. it will then keep doing this intermittently, rendering the online game unplayable as I'm being owned by AWPers everywhere. It's definitely me as other people in the server also on VM are experiencing no lag. On top of this, I sometimes find my browser will run extremely slow on occasions, as well as downloads becoming slow on some occasions.