The iPhone "iPhone" could not be restored. An unknown error occurred (6).

i'm having the same problem even without using the dock station? i itunes says that it is restoring for about an hour and then at the end say unknown error 6. anyone figured this out yet?

I am having the same problem except my error number is 1603. I have tried uninstalling/reinstalling iTunes, turning the phone off and on and following the "unable to restore instructions" on the tech support site. I am using the cable directly connected to my computer, not the docking station. I still get the error message "The iPhone could not be restored. An unknown error has occured (1603.)" Any ideas? Thanks!

I'm having the same problem..my phone is also unusable now. What is the best way to reverse this process? Please, I am begging someone for an answer!

Got the same 1603 error. I am now trying to restore the iPhone, but it's taking a long time. I'll update if it's successful.

Worked out OK. I hooked up the iPhone to the PC directly (no dock) and did a restore. Note that my iPhone was left with the Apple logo and a processing icon at the bottom of the screen. I had to do a reset to clear that, then hook it up to the PC. After the restore, everything seemed to go well. I did get some funny messages about contact conflicts and it said that it had to update 300+ of my contacts on my PC. Didn't see any data loss.

I'm having the same problem, and changing the cabling (and computers) fixed nothing. I took out the SIM card and put in my old motorola Razr and am using that for my phone until I can get this fixed.

THIS WORKED FOR ME....first disconect all usb hardware, don't use the dock, and TRY in EVERY usb port on your computer ! it should work on one.

Similar problems with my upgrade but mine sticks at "Verify iPhone software..."for hours. I have an unusable iPhone and am traveling internationally.

Add my name to the list. Wow. This is really bad. Lots of people having the same issues. I am getting the "... unknown error occurred (6)" message

I have tried:
- removing and reinstalling iTunes.
- connecting directly to my iPhone (previously I was using the dock connected through USB on my monitor.
- deleting the downloaded update file (ipsw file).
- retrying the upgrade restore multiple times.

I am about ready to try the upgrade from another computer and restore from my main machine (as reported on another thread by "pepsiguy").

Ok. I finally got it working - just took a lot of work.
- On my first try I had the phone connected through USB ports on my monitor.
- After later attempts with the phone directly connected to my PC, I removed and reinstalled iTunes. This didn't seem to help.

Ended up doing the following:
- Connected the iPhone to a totally different computer that had never synced with an iPhone.
- This at least got the 2.0.1 update on the phone.
- Connected the iPhone to my main computer and iTunes prompted me to do a restore (which I did).
- I then fell into the endless restore loop described here:
http://discussions.apple.com/thread.jspa?messageID=7762838&#7762838
- I finally picked the "setup new phone" option and everything seemed fine.

Too much effort for such a seemingly simple upgrade. I hope the next upgrade is not this much work.

What seemed to solve the problem for me was:
- using a different Windows Account
- using the original USB cable (not the one from iPhone 3G)
- unplugging all other USB devices.

You Guys are lucky I get the same problem and mine is only 24hrs old!

Only just got the thing syncing it with Itunes and it said there was an update so I thought why not before I put anything on the **** thing and now can use it!

I havent even made a call yet!

Not the best of starts!

I am using only the cable and nothing else plugged in USB still doesnt work!

Looks like it might be goin back!

Ill keep you posted

Paul

Just reinstalled Itunes again and tried different USB but still no joy!

Trying it on another PC is not the point now. It recognised the Phone from the off and now after trying to do an update it has left the phone redundant and as much use as a chocolate teapot!

I think I will exercise my right to cancel within 14 days and my reason is it is very close and as much use now as the stuff people normally wipe from their feet which normally doesnt smell to good!