Hacking Any way to use old saves on MTCard/Gateway?

[tofast4u]

Well as you guys are all aware after the method GateWay allowed people to play their ROM's online, if we changed the header of the ROM our old save that we played with wouldn't be recognized and a new save would be created. Is there a way to use your old save? For example I have Luigi's Mansion 3DS in which I completed half the game already, but I can't play it online cause I didn't change the header of it yet and make it the other .3dz format. Is there a way to keep the old save, and make the game work online?

 

[cearp]

no, at least not yet

 

[MelonGx]

MT 2.1 allows you to convert 3DZ save into 3DS save, with the correct 3DZ ROM inside MT-card.

 

[cearp]

MT 2.1 allows you to convert 3DZ save into 3DS save, with the correct 3DZ ROM inside MT-card.

so you can really make a save use any header?

 

[MelonGx]

so you can really make a save use any header?

I can make a save without header if it's 2.2.0-4 encrypted & I have that save's original header.

 

[Shinitai]

So the short answer is no.
The long answer is no, unless your saves use the old encryption method which no new games use, unless they've been forced to with this: https://gbatemp.net/threads/decrypt-re-encrypt-saves-for-most-games-sort-of.364522/

The Gateway team said, however:

Our next focus will be revising the savegames subsystem. We think a lot of our savegame editing and retail gamecard users will be pleased with what we have planned!

Not sure what this means exactly, but it seems to imply they'll come up with some method to decrypt and encrypt new saves, which would allow you to do what you want. Maybe.

 

[tofast4u]

I can make a save without header if it's 2.2.0-4 encrypted & I have that save's original header.

So would that method work with Luigi's Mansion?

 

[Shinitai]

So would that method work with Luigi's Mansion?

No.
Not unless you did this beforehand https://gbatemp.net/threads/decrypt-re-encrypt-saves-for-most-games-sort-of.364522/

 

[MelonGx]

No.
Not unless you did this beforehand https://gbatemp.net/threads/decrypt-re-encrypt-saves-for-most-games-sort-of.364522/

Not need to do this.
But since I don't have Luigi's Mansion 2, I don't know whether it is Card2 or not.
MT 2.1 Launcher's save conversion ONLY SUPPORTS
1) CARD1
2) 2.2.0-4 ENCRYPTED
3) 512KB
SAVES.

Here're examples of failure:

Dragon Quest 7 (JPN)
1) Card1 - OK
2) 2.2.0-4 encrypted - OK
3) 128KB - NG *Support restoring 128KB dumped saves into another legit cart though.

Dragon Quest Monsters 2 (JPN)
1) Card1 - OK
2) 6.0.0-13 encrypted - NG
3) 128KB - NG

Pokemon X/Y
1) Card2 - NG
2) 6.0.0-13 encrypted - NG
3) 512KB - OK

 

[hippy dave]

Luigi is Card 1 but only 128k.

 

[DemiseScythe]

So I got an Emunand Pokemon Y save on the Retail cartridge and still using GW2.0b I think. My 3ds spent past 6-7 months in a drawer. Anyways, so when I update to new GW and Emunand, my save will be lost? Planning to update soon for Smash.

Might be a little offtopic but did the Pokemon XY 1.3 patch remove hacked pokebank imports because I'm still on 1.2 on my updated 3DS and it is letting everything I through at it through. So much for antihackmon measures GF. Still, I won't complain about an army of Mews.