[Tutorial] Make your own custom background

[kokole]

Searching inside the file in a hex editor.

Just search for the filesize in bytes as unsigned 32 bit integer I think.

That is the total filesize which should get increased by 4. Maybe some other values very close to the one found above needs to get changed as well.

Et voila => valid IWI with valid CRC32.

I already tried with no luck, anyway, there is no graphic difference

[malcolm341]

When I try to extract files from

C:\Program Files (x86)\Steam\steamapps\common\call of duty modern warfare 3\main\iw_00.iwd

using winrar it gives me an error, The archive is either in an unknown format or damaged.

What am I doing wrong?

[d3kker]

When I try to extract files from

C:\Program Files (x86)\Steam\steamapps\common\call of duty modern warfare 3\main\iw_00.iwd

using winrar it gives me an error, The archive is either in an unknown format or damaged.

What am I doing wrong?

dont extract, just open the iw_iwd file then drag you new bg into the winrar and press ok.

[d0h!]

yep just select winrar when you right click on the iwd file using "open file as..."
or just unpack it using it 7zip, this should work without giving an error