[QUOTE=Luigi;463064]You no longer need a MAC to run iOS4 as iTunes 9.2 for windows is now available.

Download and install iTunes 9.2
Obtain a copy of iOS4 GM Build
Plug in your iPhone and back it up.
Hold down "Shift" and click restore
Locate the iOS4 GM Build file
Update your iPhone to iOS4.[/QUOTE]
Yeh i have all of that. I don't want to lose my jailbreak + baseband on my current 3.1.3 firmware.

im not jailbroken, so im going to do it now :)

[QUOTE=teejay;463070]im not jailbroken, so im going to do it now :)[/QUOTE]
ok cool, let us know how you go. Do you have the 4.0 GM firmware?

yeah downloading it atm.

I so want to install, but given the official release is on Monday and there might be changes from 4.0GM to the 4.0 on Monday... I'll wait.

[QUOTE=Kato;463077]I so want to install, but given the official release is on Monday and there might be changes from 4.0GM to the 4.0 on Monday... I'll wait.[/QUOTE]
Yeah ive heard that as well, everything is in the air at the moment. Need to find myself a mac next week somehow ;)

up and running - feels quicker.

where you download the firmware from Tom

[QUOTE=NVRENUF;463096]where you download the firmware from Tom[/QUOTE]
[url]http://download.imodzone.net/[/url]

or

[url]http://gumballtech.com/2010/06/07/download-ios4iphone-os-4-0-gm-here-itunes-9-2-beta-included/[/url]

iPhone 3G [S] iPhone2,1_4.0_8A293_Restore.ipsw 377.81 MB

This one yeah