Since HG/SS is still two weeks away here in Europe, I got bored and made some AR codes for the Ranger games. These codes will reset the one-time-per-cart events, i.e. the Manaphy Eggs, Riolu and Darkrai.
Pokemon Ranger:
(use only one of these codes at once)
Reset Manaphy Egg
22134828 00000001
2213482a 00000000
Reset Manaphy Mission
22134828 00000003
2213482a 00000001
Pokemon Ranger 2:
Reset Manaphy Egg
220b0268 00000000
Reset Kyle Riolu
220b027c 00000000
Reset Almia Darkrai
220b02