Stuck in void in cartridge form of pokemon diamond on ds

[SlaM_Danger]

Is it possible to use pkhex to move my character out of the void.

[BlackShark]

Use the Trainer Info Editor to set your coordinates to a valid location.

Like Twinleaf Town:
Map: 411
X: 112
Z: 1
Y: 870

[theSLAYER]

 yeah if it's loading past the continue screen, editing to Twinleaf should be enough.

If it's corrupted due to being in the void, it needs slightly more:

and