I'm running 1.0.2, jailbroken, etc., and working with basically no problems (though Installer has been failing to install various apps).

Now, I'd like to upgrade to 1.1.1, and possibly 1.1.2, so I began by trying to virginize. The problem is, I can't copy files from my mac to the phone, either using CyberDuck or sftp. The problem is that the iPhone file system (certainly /usr/bin and /usr/libexec) are reported as "read-only". This might also explain why Installer often doesn't work.

How can I possibly get the necessary files onto the iPhone? I'm wondering if this has something to do with the "lockdownd" file ...perhaps I did something wrong when I initially hacked the phone. Advice on how to recover is very welcome!