"Final terminator missing'' Shiny Mew from Faraway Island Island Event

[D3ViL02]

I've RNG manipulated a Shiny Mew using MGBA Emulator and then moved it to my physical copy of Emerald, I was using the previous version of PKhex and it would be flagged as Legit, but now after updating to the 260320 Version it now gets flagged as Invalid. Should I get worried ? If I move it to Platinum for example it gets flagged as Legit tho.

[Kaphotics]

3 hours ago, D3ViL02 said:

I've RNG manipulated a Shiny Mew using MGBA Emulator and then moved it to my physical copy of Emerald, I was using the previous version of PKhex and it would be flagged as Legit, but now after updating to the 260320 Version it now gets flagged as Invalid. Should I get worried ? If I move it to Platinum for example it gets flagged as Legit tho.

Probably because you used a not-Japanese save file to catch it, thus having invalid trash bytes applied. Program working as intended.

The Gen3=>Gen4 transfer re-encodes both Nickname and OT, so the original trash bytes are not carried forward, hence the clean report in Gen4.

[D3ViL02]

Wow, thanks for the clarification, I used a file from an old playthrough. Is it safe to transfer this Mew ? Or should I play Emerald again in Japanese and get the Mew ?

Edited Monday at 05:10 AM by D3ViL02

[AlamosIT]

I noticed the same thing happening in my gen III save files with a few mons obtained by trade a lot of years ago.

For example, I have this Crobat since 2007, obtained from a kid that had a English copy of Emerald (we traded mons with my Italian one).

What could have happened?

0169 - CROBAT - DD3BCF68A15E.pk3

[Red531]

It flagged a pokemon that I caught recently. Half my pokemon (most that i have never touched) seem to have an issue, the other half seem fine. What parameters are actually important for the check? Should all pokemon caught within a game have the same trash bytes?

Pidgey_52622CBA.pk3

[AlamosIT]

3 hours ago, Red531 said:

It flagged a pokemon that I caught recently. Half my pokemon (most that i have never touched) seem to have an issue, the other half seem fine. What parameters are actually important for the check? Should all pokemon caught within a game have the same trash bytes?

Pidgey_52622CBA.pk3 100 B · 2 downloads

Did you use an emulator or an actual copy?

[Red531]

On 3/31/2026 at 1:35 AM, AlamosIT said:

Did you use an emulator or an actual copy?

emulator

[AlamosIT]

11 hours ago, Red531 said:

emulator

Maybe some emulators don't create a 1:1 actual-like save file, so there could be some issues in "trash bytes".

Maybe, in my case, that Crobat came from an old bootleg copy and other mons I have could come from emulator (shiny mons probably obtained with RNG manipulation).

@Kaphotics could this be a correct explanation?

Is there a way to "clean" these Pokémons?