How I got my Wi-Fi connected

After flash to pr1.2 it would recognize my home wireless network, it would not join the network. My router uses WPA security with a password, but every time I CAREFULLY entered the password it was rejected. If I shut off security in my router, I could connect, but as soon as I returned to the security settings I could no longer connect. Here's the fix: I simply changed the password/key for my security setting in the router, and then the phone would connect. Then I changed the password back to what it had been,and the phone connects again. All good now.
i'm using my brain!!!!!