correct

So this will install on , non jail break phone. And also on monday when it's offically out.
will phone just upgrade like normal ? to the current one

you will need to have itunes 9.2 installed. then open up itunes, do a restore and point the location to the 4.0gm firmware you just downloaded. With regards to the official release on Monday, its hard to tell. If nothing has changed then it probably won't ask for an upgrade. Worst comes to worse, if you want you could just download the office 4.0 firmware next week and do the same restore proccess through itunes.

EDIT: Ive managed to get a hold of the 4.0 GM custom firmware (jailbroken) version for the 3GS, attempting to install it now.

Lost all my apps after restoring back up ? nothing

I got sms back in and contacts and emails

but all apps gone ?????? fuck lol

lol

ok so you did the restore, now just do a sync and it should put everything back (apps. contacts, msgs, etc

Please share
Do you need to be in a particular baseband?

__________________
MY99 WRX (Sold)
MY06 WRX 241hp 430nm atw (Sold)
MY09 BMW 135i 247kw atw (Current)

Ah doesn't matter good chance to clear useless apps i dont use

yep

http://www.sinfuliphone.com/showthread.php?t=23734

may need to register in order to see the 4 links, its free.

My phone is in the process of loading the new firmware now. Will keep you updated on how it goes.

Um not sure about the baseband, do you have the latest baseband?

I can happily say that i have restored a jailbroken iOS 4.0 GM firmware file to my iphone 3gs 16gb (previously was on 3.1.3). Mutli-Tasking is awesome, the OS seems to run a little quicker than the v3 firmware. Will be interesting to see if there is any difference in battery life (better or worse).

Good stuff! Yeah I'm running the latest firmware and baseband - jail broken using spirit.

Did you have to restore yours to a unmodified 3.1.3 first or did you just restore using the hacked 4.0?

__________________
MY99 WRX (Sold)
MY06 WRX 241hp 430nm atw (Sold)
MY09 BMW 135i 247kw atw (Current)