"Hardware
As others have figured out by now, the Pre is codenamed Castle and
there's some references to another device called Pixie. This is
presumably the Eos device that's expected to end up with AT&T.
The other interesting thing is that the image contains modem
firmware for both CDMA and UMTS. They're shipped as tarballs -
extracting them gives you something that looks awfully like the
firmware for the Qualcomm Gobi dual-CDMA/HSDPA chipset used in a
bunch of modern laptops. The core firmware is an ELF object for
32-bit ARM. It's got references to Qualcomm in it and it's also got
an embedded RSA signature which presumably cuts back on the
potential for interesting hacking. The
"command, executed as root, should flash the UMTS firmware to
the modem (castlecdma_evt1_fw.tar is the CDMA firmware). However it
should be noted that the MSM6801A baseband used on the Pre seems to
be a CDMA-only chip and there's no obvious place on the board for a
SIM socket. My assumption is that the GSM models will have a very
similar baseband with different radios. Unlocking the device will
presumably be similarly difficult to the iphone - someone will need
to find a flaw in the Qualcomm firmware that allows the network
lock to be skipped. The PmModemFactory command will let you unlock
the phone, but you'll need the appropriate code to do so and can (I
guess) permanently lock it if you enter the wrong code too
often."
