Downgrading original iPhone from 2.0 to 1.4

I know what you mean, my contacts menu is particularly slow and jumpy compared to the old system. It would be interesting to hear if we have an isolated problem...

Safari and SMS apps take longer for me.

Try using the restore file ending in .ipsw that is for 114 software version. Click shift + restore button in iTunes and it should prompt you to use whatever restore you want.

Orion.

On windows computer only, not sure about osx.

Message was edited by: Orion Sun

I tried to downgrade with a restore from the latest itunes and it failed. Older versions of itunes would not see the phone... good luck 🙂

You're not the only ones with this problem. I think that the vast majority that went through the 2.0 fiasco are suffering the sam types of problems or worse. We just have to hope Apple pushes a patch or new update soon. In the meantime you can try rebooting your phone. Hold home key and lock key down until the apple logo comes on.

I just found:

Library/iTunes/iPhone Software Updates/iPhone1,1 1.1.4_4A102Restore.ipsw

It's about 162 MB file.

I can use this to restore my iPhone to v1.1.4 from 2.0 or will it cause problems?

you have to remove itunes and the apple mobiledevice from your mac/pc and install itunes 7.5 (don't forget to restart your computer) - afterwards just push on restore and it will install 1.4

You might want to upgrade to 2.0.1 before you attempt this, now available in itunes.