(adsbygoogle = window.adsbygoogle || []).push({}); When I looked at this board and various other sites for the release of Campaign / Spec-Ops hacks for MW2, I've found out that there's none, only the 360 version exists.
So, I've begun my journey on trying to get it working for the PS3 version. And in the end, I've finally got it working... damn that took me a while to understand exactly how everything work.

I have successfully re-summed SAVEGAME.SVG and loaded da shit up in the game without any problem.

I'm not going to release the full working hack any time soon, but I'll release the half working hack for now (the download link is below) since the DVARs are already in public domain.

This half-working hack includes infinite health, super jump and speed and infinite ammo (just like what the 360 version includes) :

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I'll try to make this short, ok, here goes.

Try to load the save in MW2, and you'll get this error:



MW2 save is checksummed, just like other games' saves. If there's no copy protection on them, they are likely to be checksummed.

When you save data in-game, PS3 takes every single byte of a save data (e.g. SAVEGAME.SVG) and re-generate a checksum. So, if you change something inside SAVEGAME.SVG and try to load it in-game, PS3 will compare this editted SAVEGAME.SVG and the checksum value. If this SAVEGAME.SVG and the checksum value are not the same, you'll get a 'bad checksum' error. Understand?

Here's more information about checksum:
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Good thing is that the checksum is stored inside SAVEGAME.SVG, not inside the PS3 system!

All you need to do is to locate this checksum in SAVEGAME.SVG and update it. In other words, you need to identify how SAVEGAME.SVG is checksummed and then you need to know what data is covered by that function before you can do anything about it.

I'll give you a few hints regarding the checksum:

- Get a lot of SAVES that are almost the same (same mission, same checkpoint but different difficulty) and compare to each other in any hex editor program.

See which bits always change and see which bits don't change. There's a good chance that the bits that always change are the checksum.

- To update the checksum value, you must generate a new checksum and replace that with the old checksum value somewhere inside the save ...

- If you think you have found where the checksum is, you must ignore that bit and then generate a new checksum based on everything else (data), anything that's not part of the checksum.

- If you see 4 bytes (8 digits) that always change, it's likely not to be MD5 or something similar. If you didn't know, a MD5 hash has 32 digits.

So, if you generate a checksum that happens to be the same as the checksum inside SAVEGAME.SVG (un-hacked), you're set!!

If you have never done this before. I suggest following these tuts, it will make you understand the whole thing easier:

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And

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If you have followed these tuts and got the matched results, then fixing MW2's checksum will be easy.

Anyway, if you have managed to re-sign the save correctly, you can get more hacks. The full list of DVARs is available:

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Just add desired DVARs with thier values (e.g. ..200B0..) under compress_$mapname inside the save and you're set.

Enjoy and good luck.

Hmm, fail. In premium you can now find hacks to unlock all the specs ops trophies just by playing the pit once! No need for this shizzle that doesn't even work.

Cheers for the post. Might try it sometime +rep

Seriously?

For PS3? If so, premium be mine!

managed to do that by editing the savegame ?

I've already offered to record for him on the 1st page and he made of some excuse why he can't so I call BS and the thread should be closed if no proof will be posted.

so can we just download that and load it up and play? ._.
or is there extra stuff we have to do?

Just delete your GPAD0_SP.PRF with the modded GPAD0_SP.PRF and run "The Pit" one time and you'll have all 69 stars and unlock trophies.

If the file is in the premium section just PM me and I'll hook ya up

Looking for a way to mod Intel now so all you have to do is get the 1st one on the 1st mission to get 45/45, which will also give you trophies.

This does not work do not waste your time.

Use the one in the premium section 100% working. (must be premium to view it)

This should be closed unless proof is given



Awesome Intels all I need now so I wish you luck.