WPC300N lost connection to WRT150N after router firmware update

This is my second WRT150N in a week: out of the box it worked great, and then I updated the firmware to 1.01.9 (which is basically the same) and now my laptop WPC300N adapter can't connect to the WRT150N router! Anyone know how I can fix this? Set up: DSL modem connected to WRT150N WRT150N connected to desktop by wire. Laptop with WPC300N connect to router wirelessly. Thanks!

Yes I did updates on both router and adapter, but the original firmware on the router was basically the same as the one posted on Linksys web site (which I downloaded and used to updated it). On the first router that I bought, I followed the CD instructions and did the firmware update right away, and ran into the exact same problem. I did not have a chance to test to see if would work out-of-the-box. Now, the adapter just sits there with the "Act" light blinking regularly.

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WPC300N lost connection to WRT150N after router firmware update

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