It looks like the access to the serial console, which seemed so promising just a few days ago, has dead ended against a well-locked gate. Fortunately, there are still other fronts for attack
Latest Progress Report – The iPhone Dev Wiki
July 9, 2007 2:50AM Eastern UpdateThe bootloader is basically a dead end. Everything that goes into it must be signed, and without apples 1024-bit RSA private key, this isn’t going to happen. Fortunately we have another in. We have basically full command over the file system and can upload, copy, and run files. I’ll say this, ringtones would be a *trivial* thing to do now. We know the radio is accessible though software from from thisbbupdate dump. Once the toolchain is working, we can write a program to write to /dev/tty.baseband, and finally unlock thi thing.
-dev team
Update: They’ve compromised the root filesystem, which should open opportunities for ringtones, custom icons, and potentially, custom apps, including unlocking programs.