[Q] Help reverting my SGS I9000 to stock

[E.Z.]

Hi, I'm trying to revert my phone back to the its stock state, in order to try to restore its warranty.
I have the ROM I got from my network provider, but I need an unrooted JV8 kernel, and a way to restore 3E recovery.

Any help would be greatly appreciated.

 

[NeoMustain]

Why doesn't Odin flash with Stock ROM work?

 

[E.Z.]

Because I have a backup of my cellular company's rom, but not the kernel, and I want to revert to that old rom, remove cwm, and flash that kernel through Odin.

 

[NeoMustain]

Not sure what you intend. Flashing previous ROM should also get you previous unrooted kernel. Roms do not come without kernels I thought.