These are the last questions...I promise....

If I have a mode2 .iso burnt image, then I open it with MgicIso, extract from .iso some files, I modify the files with Navtweak, finally put my modified files, through MagicISO, in the iso file again...saving .iso file Magic tell me "calculate CRC..." then it save my modified .iso.
Is this a correct procedure or trying to upgrading navi something can goes wrong?
Once modified from mode1 to mode2 an iso file it always remain in mode 2?
The files I modified, are always in mode2 or became mode1?

These below are the 4 hex I must change in 0000 to get a "wild" sw?

Thanks, thanks, thanks...