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I have a new iPhone 3GS. I somehow got it into restore mode before I turned it on, so I don't even know what version of iOS is installed. I don't want to restore through itunes, I don't want baseband updated. When I try a custom restore to preserve baseband, it gives me "Error 1600/1604" even thought I put it in DFU mode. What can I do?

Richard Carpenter
2011-11-29 00:11:00
Well, I would recommend restoring with iTunes, But a alternate out the is iDeviceRestore. I have not tried it, and I probably will never try it on my iDevices. Also a fix using iTunes is here: http://iphone-downloads.hubpages.com/hub/Fixing-1604-iPhone-Restore-Error--How-To-Go-About-Fixing-1604-iPhone-Restore-Error
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Mike
2011-11-28 13:40:00
1. try downloading and installing the latest iTunes version2. try a different USB port (do not use a HUB, for a desktop pc try a port on the backside)3. make sure you are in DFU mode (black screen) not recovery mode (iTunes logo) another possible problem & fix