Xbox 360 save editing?

[Lazy Bastard]

Perhaps this will be of use to you (I had the same request for another reason, not too long ago): http://gamehacking.org/vb/threads/75...ghlight=endian

[47iscool]

Thanks! It converts perfect.
& thanks Viper187 & LB for replying back.
But now there one tiny problem, the file size is slightly different.

PC save size: 62.11 KB
360 save size: 61.22

this is proof EA didn't want PC saves being injected into the 360.
I know all of the hidden cars are there, I look into the extracted game data & the names are identical, if I ever did somehow get this to work, I could upload
a JPEG proving that, I also extracted a PS2 save & it is only one byte bigger,
when it comes to this kind of stuff, EA was prepared, now I'm frustrated with this thing,
but all in all, RegExr worked perfect. If you guys want, I could upload the two saves in an attachment 7-zipped, that
way you could see for yourself, unless someone made & save converter, I don't think it's possible, I imported the larger save
from the PC but, MW tells me it appears to be corrupted, thanks for all the help.

Question to LB: Do you know if there's an offline version of RegExr?

[Helder]

Don't forget the whole reason this thread has 2 pages, the saves have checksums to make sure they aren't tampered with otherwise you get the corrupt save message. Look at my previous posts that have links to how to calculate your checksum.

[47iscool]

I use Horizon to auto rehash & resign, to get the data I extracted the save out of it's container, & when I insert a new one the NFSMW icon is not in the main area, I can only see it when I go to copy or move it, when I go to games & apps it has no icon.

[Viper187]

Thanks! It converts perfect.
& thanks Viper187 & LB for replying back.
But now there one tiny problem, the file size is slightly different.

PC save size: 62.11 KB
360 save size: 61.22

this is proof EA didn't want PC saves being injected into the 360.
I know all of the hidden cars are there, I look into the extracted game data & the names are identical, if I ever did somehow get this to work, I could upload
a JPEG proving that, I also extracted a PS2 save & it is only one byte bigger,
when it comes to this kind of stuff, EA was prepared, now I'm frustrated with this thing,
but all in all, RegExr worked perfect. If you guys want, I could upload the two saves in an attachment 7-zipped, that
way you could see for yourself, unless someone made & save converter, I don't think it's possible, I imported the larger save
from the PC but, MW tells me it appears to be corrupted, thanks for all the help.

Question to LB: Do you know if there's an offline version of RegExr?

I remember reading a similar thing about Skyrim. I think the 360 version had extra bytes, but if you cut those off the save worked on PC or vice versa. Google it. Although, in come cases, a difference in the bytes could mean a different type of checksum being used and the extra byte is part of that. I dunno.

[Lazy Bastard]

47iscool: Yes, there's an offline version. You can download it from their site.

[Viper187]

Thanks! It converts perfect.
& thanks Viper187 & LB for replying back.
But now there one tiny problem, the file size is slightly different.

PC save size: 62.11 KB
360 save size: 61.22

this is proof EA didn't want PC saves being injected into the 360.
I know all of the hidden cars are there, I look into the extracted game data & the names are identical, if I ever did somehow get this to work, I could upload
a JPEG proving that, I also extracted a PS2 save & it is only one byte bigger,
when it comes to this kind of stuff, EA was prepared, now I'm frustrated with this thing,
but all in all, RegExr worked perfect. If you guys want, I could upload the two saves in an attachment 7-zipped, that
way you could see for yourself, unless someone made & save converter, I don't think it's possible, I imported the larger save
from the PC but, MW tells me it appears to be corrupted, thanks for all the help.

Question to LB: Do you know if there's an offline version of RegExr?

I remember reading a similar thing about Skyrim. I think the 360 version had extra bytes, but if you cut those off the save worked on PC or vice versa. Google it. Although, in come cases, a difference in the bytes could mean a different type of checksum being used and the extra byte is part of that. I dunno.

[47iscool]

Well I swapped bytes 360>PC & not even the NFSMW 1.3 save editor will detect it, should I upload the 2 saves so you guys can see what I mean?

[Viper187]

Well I swapped bytes 360>PC & not even the NFSMW 1.3 save editor will detect it, should I upload the 2 saves so you guys can see what I mean?

Well, I guess you could. Is the save editor for the PC version or 360? It would probably only work with one byte order or the other, hence not detecting a file of the opposite order. I'm actually sitting here putting together the GUI for a utility for a byte flipping tool in Renegade. I'm hoping to release the first new version by the end of the week. I've rewritten so many things multiple times the past week it's unreal. Half the time it's just because I decide to do something a different way to make it more organized/scalable in the source.

[47iscool]

I did reverse as the PC version is, but nothing, the editor is for PC.
Here are both in their native format.

Some data in the 360 version starts with 3F80, I know that it's PPC because Wii/GC games
use these as default values, so the PC version must be the one that's reversed because some of it's
are 803F.

[Viper187]

The two saves are substantially different lengths. You need to figure out why before you can use one platform's save on the other. I think the first step would be to start a brand new save on both versions trying to do everything exactly the same on both until the save is created. Then flip the by order and compare them to see what's different, where, and why. Also, look up that info on making Skyrim saves work on both platforms. Might help knowing what's different with those and why.

p.s. 3F80 generally appears as part of a 32-bit value, 3F800000, which is 1.0 in IEE754 float. Seen it a lot on N64.

[47iscool]

I'll do that, I did look up the Skyrim save info, I'll try it sometime later, going to let my PC rest for
a few hours, & thanks for taking a look at the saves.

[Helder]

I use Horizon to auto rehash & resign, to get the data I extracted the save out of it's container, & when I insert a new one the NFSMW icon is not in the main area, I can only see it when I go to copy or move it, when I go to games & apps it has no icon.

Right all that resigning and hashing is to attach it to your Xbox ID it doesn't fix the checksum which is covered in this link http://www.thmods.com/forum/viewtopic.php?f=6&t=107 take a look and see if it makes the save work.

[47iscool]

After checking around, I found that it uses a different checksum called DWORD EAcrc32, so it's probably a no go, if I find anything else I'll let you know, for those who might be wondering, I talking about the original 2005 version, not 2012.

Question: Does anyone know what kind checksum an entire 360 save uses, say like, for all games, the ASCII header starts with: CON

[Viper187]

After checking around, I found that it uses a different checksum called DWORD EAcrc32, so it's probably a no go, if I find anything else I'll let you know, for those who might be wondering, I talking about the original 2005 version, not 2012.

Question: Does anyone know what kind checksum an entire 360 save uses, say like, for all games, the ASCII header starts with: CON

I'll be interested to know what possible checksums there are and how they work. I'd like to support them at some point. I don't think there's any standard checksum on 360 saves, just the ID that needs rehashing/resigning. Checksums are on a game by game basis. FF7 on PS1 is one of the oldest games I know of that checksums its saves.