How to edit Pokemon X save to encouter different Legendary bird?

[foohyfooh]

I  choose Fennekin as my starter and got Zapdos as the corresponding bird. I tried editing the started choice value and it didn't change. Does anyone know what flags need to be edited to change which bird shows up?

[theSLAYER]

@wofax read the legendary bird and sea den portion, for full context.

The data that will help you would be in the finalized edit portion.
You're gonna need to know how to hex edit the save, and use PKHeX to fix checksums before importing the save into your game.
 

 

[foohyfooh]

Thank you.

 

I have finally gotten around to edit the main file based on the following information from the post that you sent

0x17E1C  controls species ID. (90, 91 or 92)
                Forcing it to other values will force the encounter to be Articuno.
0x17E23  0x20 Ready to Battle (also 20 when below 0x0B), 0x40 Captured/Defeated.
0x17E40  Stores roam encountered count (0x00 to 0x0B)

I changed 0x17E1C  to 90 to try to get Articuno and this is the error that I am getting from the verify checksum

Invalid: 1F @ Region 17E00
SAV: 54/55

[theSLAYER]

On 3/28/2020 at 5:38 AM, wofax said:

Invalid: 1F @ Region 17E00

SAV: 54/55

Yeah, since we didn't calculate the checksum, it wouldn't be correct.

However just save in PKHeX. PKHeX recalculates the checksum for all sectors, so it should work.
I'm assuming you have yet to test the edits on your X/Y.

Have a safe unedited save backup, loaded the edited one into your game, then let me know.

[foohyfooh]

Thank you. I didn't realise that I had to save it using PKHex. It successfully worked and changed the Legendary Bird.