If you have a Linksys WAP54G wifi router and you want to update the firmware and you live outside the US, make sure you download the correct non-US version.
On Monday (six days ago) I upgraded the firmware on our router (a BEFSR41) and access-point (a WAP54G) to the latest versions. In the case of the A/P this was version 2.02.7. Everything worked fine.
Today it just stopped working. After six days! Connections wouldn’t authenticate and I couldn’t access the A/P’s configuration screens to diagnose the problem. After a couple of very frustrating hours I finally nailed it, thanks to this page opn dslreports. Somewhat surprisingly, there is a difference between US and international hardware. Non-US hardware needs a special international version of the firmware. A non-US device will allow you to upload the US-specific firmware, but operation will be erratic. To find non-US firmware it, click ‘International’ on the Linksys home page and navigate to the product downloads via an unnecessary flash page. The UK version (1.08) of the firmware is here. The solution is described at dslreports.
Argh.