tough luck man, i think pokesav changed itf to a normal pichu, since it probably doesnt recognize the notched ear pichu (yet), my advice is to wait for a pokesav update, maybe u could then change it back to notched ear pichu, since it is viewed as a different pokemon.
Thank God I keep spare save files, just found a file BEFORE my friend messed with it, and now I have it back WOOHOO~! Only thing is, I have to do about four hours over, Like one route and gym, but I have my NEP back!
Remember people, DON'T change it's stats or anything cause you might lose it!
Actually, A shiny Pokemon's shininess depends on their Iv's. You change them, you change it to a normal looking Pokemon. I know, because 1) Bulbapedia, and 2)Experience. Once had a gold Steelix on a Japanese HG ROM, tried to change it's Iv's and it became a normal, silver steelix.
So in all, a shiny pokemon will probably never be as strong as a normal Pokemon. But it is flashy and pretty and fun to have, don't get me wrong.
EDIT: Lolz, thought you were talking about the Pikachu-colored Pichu *FAIL*. But maybe the same rules apply anyway. Make sense?
Olly go to our chat I have something to tell you.
Edit: A shiny pokemon is determined by an algorithm with the TID, SID, UID, and LID. the UID and LID come from the PID and it has nothing to do with IVs b/c eggs IVs don't have to match the PID
Hahaha that would suck, i had a similar experience, but not cheating, started my HG game, first pokemon caught was a gold geodude, was psyched on it, then save file got corrupt, and no backup...i was heartbroken (hehe, pun totally intended)
That's strange, I didn't have this. I chaned quite a few pkmn to have pokerus and also changed my togetic move set (wanted it to have magical leaf, like the togetic on serebii pokedex said). Did the same to my magmar to have it learn thunderpunch, and my pichu is still NEP (this is with that save file that still had it, lucky~!). I also plan to use it to teach my new pokemon (tauros, miltank, magnemite, farfetch'd) to learn the tm's I have and they can learn (saves money