As i understood you should have router between vlans which have ip 10.1.20x.1 - and also you should specify _interface FastEthernet0.20xencapsulation dot1Q 20x_and on router between vlans on interfaces vlan 20xyou shoul specify ip helper-address
If you are using IOS-Press and hold the MODE button while you reconnect power to the AP. And Hold it until the Status LED turns amber, then release the button.=> then reboot it and your config will be set to factory defaults. (username an password Ci...