How can I ride my bike using PKHex on Gen 3?

[MuzzyCerdo_]

Oddly specific request, but I was wondering how could I ride my bike on places you usually can't using PKHex? I'd appreciate a solution (Spanish Emerald btw) 

[Kaphotics]

Not something you can do with save edits; the permission flags that determine what you can do on a map (fly from, bike) are set in the ROM.

Use a cheat code, or edit the ROM.

[MuzzyCerdo_]

I'd appreciate if someone sent the cheat code needed, can't seem to find anything online