Quote:
Originally Posted by JeffElkins
Is it possible?
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Yes, it is possible. However, the PRS-700 is not fully executable-image-compatible with PRS-505 and PRS-500, so some enhancements would be needed for the Universal Flasher. At the Russian
the-ebook forum we have already developed the method of flashing the PRS-700, but I am rather reluctant to make it available for the general hacking public for fear of bricking the expensive device (there is no Sony firmware loader available as of yet to recover from the bricked state).
Besides a different ELF image format, the PRS-700 runs the 2.6 kernel (as opposed to the 2.4 in 500 and 505), and the Sony-specific application resides with the general OS stuff in the Root filesystem. This last fact makes flashing somewhat more dangerous, as the Rootfs flashing is needed in order to provide improvement for what used to be Fsk.
There are ways to debug the FW changes
without flashing, so not everything is bad (however the way known to me involves cleaning out the /Data filesystem, as in "formatting internal memory").
I would wait a while before releasing the 700 customization process to the public.
If you wish to examine the original Rootfs CRAMFS image, you can
get it here. My guess is
igorsk is already working on the Universal Flasher for PRS-700, but at this moment there isn't one available, so all customization requires assembling the CRAMFS image outside the Reader.
BTW, I am a bit surprised that the moderators haven't started the Dev. Corner for PRS-700 yet.