1602 and 1604 Errors When Attempting to Restore/Update iPhone - Please Help

Hi, I've been having trouble with my iPhone 3GS and after wasting many days on trying to solve the problem, I am reaching out for help from those more knowledgeable than me. I have been having this problem for as long as I can remember (I've owned my iPhone for just under a year): whenever I attempt to Restore my iPhone or update its OS, I receive a 1602 or 1604 error on iTunes and the process stops with the iPhone wiped. iTunes refuses to continue the Restore and any further attempts result in the same error. I originally found this work around for the problem after an exhaustive search (4th post down):
http://discussions.apple.com/thread.jspa?threadID=1363589
However, every time I wish to Restore or update, I have to follow these long, annoying, unusual steps, and, now that I am coming to the end of my year's warranty, I really want to fix this problem, or get it fixed by Apple if this is not possible.
The iPhone restores with no problem on another computer in my house, so I guess the problem is with my computer. I have taken the following steps (often many times over and in combination with each other) in my attempts to fix the problem, but with no success:
1. Uninstalled and reinstalled iTunes
2. Uninstalled and reinstalled iPhone drivers
3. Uninstalled and reinstalled all Apple software and drivers
4. Removed iTunes library, all music and any other iTunes files in music folder
5. Created a new user account, which is free from any old iTunes settings, opened iTunes and plugged in iPhone
6. Used different USB ports
7. Plugged in iPhone after being restored on other computer
I'm running out of ideas. Can anyone please help?
Thanks,
James

I had all of these problems, and I was able to fix them with the following process. Here is what I did:
My setup:
Apple Max OS 10.4.10, Mac G4, with 3rd party USB 2.0 card.
1. Upgrade to iTunes 7.6 and Quicktime 7.4, Restart and repair permissions
2. Purchase the iPod Touch Upgrade - It took two tries to purchase. I had to accept to two agreements, and then got an error. I purchased the upgrade again and got an instruction screen. iTunes appeared to download a very small file.
3. Sync my touch (I still had not upgraded to firmware 1.1.3)
4. The touch synced, but I had no new functions.
5. I clicked upgrade, and downloaded the 165GB file.
6. While the file was downloading I undocked my iPod touch and restarted it.
7. When the download was complete, it gave me an unknown error because my iPod was not connected.
8. I connected My iPod and tried to install the update. After several tries, I always got a 1602 error.
9. I restarted my computer and did a hard restart of my ipod touch. This did not work, I still had 1602 errors.
10. At this point, I chose to RESTORE my iPod Touch.
11. After the restore, I chose not to restore any content, and just tested the firmware update. EVERYTHING worked great!
12. I synced my iPod touch while I watched the keynote. 45 minutes later my sync was complete and 14 Gig of content was restored. The new functions are great. I have already read my .Mac email.
Message was edited by: gotabmac

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So like many people today, I tried to update my Touch's firmware to 1.1.3. Using iTunes 7.6, I downloaded the file, but then when it goes to update, it gets stuck on the "Preparing iPod for update" step and then comes back telling me that the iPod could not be updated, giving either a 1602 or 1604 error. I can restore back to the 1.1.2 firmware with no problems, but after multiple attempts, multiple reboots, multiple reinstalls of iTunes, and multiple forced restores, I still can't update the firmware to 1.1.3, getting the same error each time. A quick Google search reveals that I'm not the only one having this problem, so I hope a fix is worked out quickly. I guess I shouldn't be in much of a hurry, seeing as there appear to be a slew of other problems with the new application pack anyway.

I had all of these problems, and I was able to fix them with the following process. Here is what I did:
My setup:
Apple Max OS 10.4.10, Mac G4, with 3rd party USB 2.0 card.
1. Upgrade to iTunes 7.6 and Quicktime 7.4, Restart and repair permissions
2. Purchase the iPod Touch Upgrade - It took two tries to purchase. I had to accept to two agreements, and then got an error. I purchased the upgrade again and got an instruction screen. iTunes appeared to download a very small file.
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4. The touch synced, but I had no new functions.
5. I clicked upgrade, and downloaded the 165GB file.
6. While the file was downloading I undocked my iPod touch and restarted it.
7. When the download was complete, it gave me an unknown error because my iPod was not connected.
8. I connected My iPod and tried to install the update. After several tries, I always got a 1602 error.
9. I restarted my computer and did a hard restart of my ipod touch. This did not work, I still had 1602 errors.
10. At this point, I chose to RESTORE my iPod Touch.
11. After the restore, I chose not to restore any content, and just tested the firmware update. EVERYTHING worked great!
12. I synced my iPod touch while I watched the keynote. 45 minutes later my sync was complete and 14 Gig of content was restored. The new functions are great. I have already read my .Mac email.
Message was edited by: gotabmac

I have iphone 3gs and im update my iphone to ios 6 and after it doesn't work,and i can't restore my iphone please help meeeeeeeee,i neeed my iphone:(

i have iphone 3gs and im update my iphone to ios 6 and after it doesn't work,and i can't restore my iphone please help meeeeeeeee,i neeed my iphone:(

how can i restore my iphone without update?because when i want restore itunes told me restore and update and when i restore and update my iphone take the ios 6 and it doesn't work again...please help mee...tnnnxxx

Hello my name is amer and i live in iran and i have one iphone lock.but my country limited us very very.and we are very poor and dont can pay money to unlock my iphone.please help me.thank you very math.my s/n iphone is. 012652000197750.my email i

Hello my name is amer and i live in iran and i have one iphone lock.but my country limited us very very.and we are very poor and dont can pay money to unlock my iphone.please help me.thank you very math.my s/n iphone is: 012652000197750.my email iS: [email protected] please help me im very poor.im student and dont have money to keep on.

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BTW, you should not provide information on your serial number or email address in an open forum.

My apple ID: my device is iPhone 5s 32Gb but now i forgot password. I've been restored my iPhone :(( Please help me, Thanks so much

My apple ID: my device is iPhone 5s 32Gb but now i forgot password. I've been restored my iPhone :(( Please help me, Thanks so much.
P/s: sorry, I'm not speak English well.
<Personal Information Edited by Host>

First, remove your personal information from your post. None of that is needed.
This is not Apple. This is a user-to-user PUBLIC forum. You've just given out a lot of personal informaiton to thousands of strangers.
Go to iforgot.apple.com to reset your Apple ID password.

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1602 and 1604 Errors When Attempting to Restore/Update iPhone - Please Help

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