Apache shows correct filesize but wrong content, while UltraISO shows right file content but wrong size

[itsmemario]

Hey, its a little mess to explain, but Ill try.

I just bought MGS3 Snake Eater, created an iso using ImgBurn.

I renamed (uncompressed) ulaunch.efl to NETDOWN.ELF.

Updated TOC and exchanged the file in Apache.

Now, the swap trick fails. Right after selecting "Special" and "Download Camouflage"...it takes some seconds and Ill get the "Please Insert PS2 CD/DVD".

I checked those files then.

UltraIso (after extraction) shows a complete different file then it is in the image.

I only compared the end of the files.

The uncompressed ELF one has many "GNU" words at the end. While the "original" one only has words like "USBKbd" in it at the end.

The NETWDOWN.ELF on the original DVD has nothing to read inside...

What is going on here ? Im really confused.

[itsmemario]

Oh, just btw....if its from any help.

I created a Resident Evil 4 ISO before, exchanged the SLES file for the ulaunch elf, tried the "double swap" technique.

It just made a black screen on the PS2 but ran fine in PSX Emu.

The MGS3 copy wont boot up in the emu at all...