Did you buy the key from UNIDEN?
Did you enter the correct scanner SERIAL NUMBER?
Did you enter the correct scanner ESN?
The key is 6 characters PRESS YES then 8 characters PRESS YES then 6 characters PRESS YES then 4 characters PRESS YES.
The characters are
0 zero
1 one
2 two
3 three
4 four
5 five
6 six
7 seven
8 eight
9 nine
A adam
B boy
C Charles
D david
E edward
F frank