Here's a PokeWalker unlock code I found online. It's not mine.
I found it here:
http://projectpokemon.org/forums/showthread.php?5851-POKEMON-HGSS-MYSTERY-CRISTAL-AR-CODE-WITH-WORKING-EVENT-USA-CODES-NOW94000130 FCFF0000
62111880 00000000
B2111880 00000000
E0009E4C 00000104
0000000e 000000xx ---> Change the XX with the course code (see list below)
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
00000000 00000000
D2000000 00000000
Press: L+R
Courses List (Translaited from Japanese to English on Google):
xx = 00 (Hara's cool), [Refreshing Field]
01 (Mori noisy), [Noisy Forest]
02 (rocky road), [Rugged Road]
03 (a beautiful seaside), [Beautiful Beach]
04 (residential district), [Suburban Area]
05 (long cave), [Dim Cave]
06 (Aoi lake), [Blue Lake]
07 (the edge of town), [Town Outskirts]
08 (Hara of Houen), [Hoenn Field]
09 (I had the beach), [Warm Beach]
0A (or Zannokomichi), [Volcano Path]
0B (tree house), [Treehouse]
0C (scary cave), [Scary Cave]
0D (Hara of Shinou), [Sinnoh Field]
0E (mountain road and cold), [Icy Mountain Rd.]
0F (Mori towering), [Big Forest]
10 (Shiroi lake), [White Lake]
11 (riddled littoral), [Stormy Beach]
12 (Chi Resort), [Resort]
13 (quiet cave), [Quiet Cave]
14 (this swallow Umi), [Beyond The Sea]
15 (edge the night sky), [Night Sky's Edge]
16 (yellow forest), [Yellow Forest]
17 (event), [Rally]
18 (of the Kai us), [Sightseeing]
19 (road to Champ), [Winner's Path]
1A (Hara Fureai) [Amity Meadow]
I added in the names of the routes [in brackets]. So far, I've tested the Yellow Forest one, and it works fine. You have to go to the Green Man in the PokeMarts to receive the maps.
_________________
Akatsuki744's
PokePet 7@pp3R the level 83 Electivire!
Now comes in flavors such as: Manana!, Fizzbitch!, gun!, and women; with preposterous amounts of testosterone! PREPOSTERONE!