I upgraded to the custom FW iPhone1,1_2.0_5A347_Custom_Restore.ipsw

That was posted here via the bootnuter method, the upgrade went perfectly and now I have 1.2.0 with exchange, Cydia and the App Store.

The side effect is that it is so sloooow to use, the phone has gotten close to being unusable, SMS takes forever to come up, the home screen will stay black sometimes, contacts takes forever to paint the screen.

Just wondered if anyone else had noticed this behavior with their 1.2.0 phones. Has anyone been able to upgrade to the OEM non modified 1.2.0 firmware?

thanks
G

Look up this thread: Pwning 2.0 On Windows [Guide/Troubleshooting]

They uploaded a fix version:
iPhone1,1_2.0_5A347_Custom_Restore__BL3.9_4.6__Fix ed.ipsw (download torrent) -

Cheers

i used my mac to Pwntool 2.0.1 my 2.0 iphone fw and it works FASTER than when i just upgraded with itunes to official 2.0!
it is amazing, my apps don't crash anymore!