ROM Hack Injecting GBA Roms into GBA Ambassador Games?

[AquaX101]

I saw a picture of a new 3ds with the ambassador game and it was playing Mother 3 (Its not one of the ambassador games) so, how do we inject gba roms into the gba ambassador roms?

 

[Wowfunhappy]

You're referring to this, fwiw.

Any details, froggestspirit?

 

[froggestspirit]

I'm not the one that got GBA games injected successfully. What I have heard though, is that pasta CFW patches signature checks in the 3DS firmware. However, there are still signature checks in AGB_FIRM that are not patched, so one would need to (figure out how to) patch the AGB_FIRM.
This would in turn break AGB_FIRM's signature, so it would presumably only work in pasta/palantine CFW (or anything that patches sig checks).
I'd love to have custom GBA games as much as the next guy (mother 3 especially ironically), but I'm not well versed in how this would actually be accomplished.
If you are going to look into anything pertaining to this, I'd suggest going to 3Dbrew. It has a wealth of knowledge, and would be a great place to start.
Also, refer others to this post too, as it kind of explains the situation, and I'm tired of typing about the AGB_FIRM lol.

 

[Apache Thunder]

You're referring to this, fwiw.

Any details, froggestspirit?

WulfyStylez was the one that originally posted that, so it's better to direct your question to him/her. (some folks seem to referring to that user as a her. I have no idea what gender he/she is. )

AGB_FIRM has sig checks of it's own from what I heard, which is why even with PastaCFW (as it is now) probably won't boot modified GBA titles.

 

[The Real Jdbye]

I saw a picture of a new 3ds with the ambassador game and it was playing Mother 3 (Its not one of the ambassador games) so, how do we inject gba roms into the gba ambassador roms?

The answer is right in the post you're referring to.
Do your own work.

 

[froggestspirit]

Do your own work.

I'm trying that, but I'm not promising any results

 

[The Real Jdbye]

I'm trying that, but I'm not promising any results

Heh. It wouldn't be possible to patch AGB_FIRM the way PastaCFW patches FIRM though, I'm pretty sure. AGB_FIRM isn't loaded until later on, but you could maybe patch FIRM to patch AGB_FIRM on load. Patchception

 

[Wowfunhappy]

WulfyStylez was the one that originally posted that, so it's better to direct your question to him/her.

Oops! Silly me, I missed that.

 

[hippy dave]

WulfyStylez was the one that originally posted that, so it's better to direct your question to him/her. (some folks seem to referring to that user as a her. I have no idea what gender he/she is. )

Two X chromosomes confirmed.

 

[froggestspirit]

Heh. It wouldn't be possible to patch AGB_FIRM the way PastaCFW patches FIRM though, I'm pretty sure. AGB_FIRM isn't loaded until later on, but you could maybe patch FIRM to patch AGB_FIRM on load. Patchception

or just installed a cia of the patched AGB_FIRM since it is a system title in a sense

 

[The Real Jdbye]

or just installed a cia of the patched AGB_FIRM since it is a system title in a sense

Sounds like a really bad idea installing that to sysNAND... Someone with a NAND mod will have to be a guinea pig

 

[Apache Thunder]

Sounds like a really bad idea installing that to sysNAND... Someone with a NAND mod will have to be a guinea pig

I booted the console with TWL_FIRM completely removed at one point. (didn't really intend to do this, but had to reboot the console after DevMenu crashed when I was testing something, so I rebooted to reinstall TWL_FIRM. The console booted fine. I just couldn't boot any DS stuff until I got it fixed)

I would think a non working AGB_FIRM (at least from bootrom's point of view it is) wouldn't break the console. You'd only get an error if you attempted to boot a GBA title without using CFW/sig check patched out. Otherwise, the system just ignores it. You only get bricks if critical system titles like startup/system modules or NATIVE_FIRM gets messed up.

Still, unless emunand gets added, I personally probably wouldn't play around with attempting to modify AGB_FIRM on sysnand unless I had a NAND mod.

 

[WatermelonChocolate]

If someone could tell me where I can get a modified GBA_FIRM, I really want to test it.
I just need a modified GBA_FIRM and a Custom GBA-VC Game (like Pokemon Emerald, Fire Red or something like Golden Sun or Lufia if possible) (EUR or RF).

 

[froggestspirit]

Sounds like a really bad idea installing that to sysNAND... Someone with a NAND mod will have to be a guinea pig

that's like saying windows wont boot if i dont have VBA installed.

If someone could tell me where I can get a modified GBA_FIRM, I really want to test it.
I just need a modified GBA_FIRM and a Custom GBA-VC Game (like Pokemon Emerald, Fire Red or something like Golden Sun or Lufia if possible) (EUR or RF).

You have to "do the work yourself™". I don't have a modified one, though who knows if you even need a modified one. it's either that, or a properly signed cia it seems. (I still dont have custom injections)

 

[WatermelonChocolate]

that's like saying windows wont boot if i dont have VBA installed.


You have to "do the work yourself™". I don't have a modified one, though who knows if you even need a modified one. it's either that, or a properly signed cia it seems. (I still dont have custom injections)

If I would be able to get the romfs out of one of the games, I could try to customize it.
Problem: can't create xorpads on 9.0

 

[valyr]

use decrypt9 on ninjhax works up to 9.2 or rxtools via browser

 

[WatermelonChocolate]

use decrypt9 on ninjhax works up to 9.2 or rxtools via browser

I tried it already. It only creates one file called "s" (without extension etc) with a size of 1Mb

 

[The Real Jdbye]

that's like saying windows wont boot if i install a modded version of VBA


You have to "do the work yourself™". I don't have a modified one, though who knows if you even need a modified one. it's either that, or a properly signed cia it seems. (I still dont have custom injections)

FTFY

Sure, if VBA was a part of system32 and there were signature checks on every file in system32 so Windows would refuse to boot if any of the files were modified.

I booted the console with TWL_FIRM completely removed at one point. (didn't really intend to do this, but had to reboot the console after DevMenu crashed when I was testing something, so I rebooted to reinstall TWL_FIRM. The console booted fine. I just couldn't boot any DS stuff until I got it fixed)

I would think a non working AGB_FIRM (at least from bootrom's point of view it is) wouldn't break the console. You'd only get an error if you attempted to boot a GBA title without using CFW/sig check patched out. Otherwise, the system just ignores it. You only get bricks if critical system titles like startup/system modules or NATIVE_FIRM gets messed up.

Still, unless emunand gets added, I personally probably wouldn't play around with attempting to modify AGB_FIRM on sysnand unless I had a NAND mod.

There's a difference between not having it installed at all, and installing a modded one though. the bootrom/FIRM/some other part may shit bricks if it sees an unsigned system title.

 

[froggestspirit]

the bootrom/FIRM/some other part may shit bricks if it sees an unsigned system title.

Shhhh, it will be fine child.

 

[bobmcjr]

And I have a nand mod so I can play around stuff with if anyone wants to send me anything.