Just did what u suggested...4 times, 2 in the currect macbook, the other two in iMac...following iClarified's steps, even rebuilding the custom f/w twice...still same result. Its just sittin' there with apple logo, the bootneuter doesn't even kicked in at all.

And you right, no problem at all to always return back to the untouched apple 3.0 f/w, unlocked still there, but not activated. i wonder why...maybe being in 10.5.7 got something to do with it?

EDIT: Finally! its working good!

What i did is: i build another custom firmware with following:

- no baseband update
- take off all neuter option

because all i need is the jailbreak, based on the previous experience, i know the baseband still unlocked so better not touch it.

now running in 3.0

thanks dtube for the suggestions and helps.

cheers, asae