MobileRead Forums - View Single Post - Hacking on the PRS-600

nrg · 09-15-2009, 12:19 PM

Hi RyeBrye I opened mine you can take a look on mainboard pictures here https://www.mobileread.com/forums/sho...d.php?p=588443
There is some kind of test connector similar or the same as on PRS-505 from Igorsk pictures but pads are so small I would be very scared to solder anything to them. But maybe you could take a look at cramfs.Rootfs.img from firmware upgrade it seams it contains whole system, second partion (or first probably) is kernel (raw.Linux.img). I'm not familiar yet with the system used by sony to update firmware but in my opinion it is just flashing those 2 files to their respective partitions. I was trying to mount cramfs file but ubuntu refused, giving me dmesg output wrong magic

I compiled my own kernel with cramfs support but the effect was the same it is probably encrypted in some way. Any thoughts how to decrypt it?

I tryed autorun.xml and now I was only able to get same test mode screen.

09-15-2009, 12:19 PM	#8
nrg Member Posts: 12 Karma: 96 Join Date: Apr 2009 Device: PRS-600	Hi RyeBrye I opened mine you can take a look on mainboard pictures here https://www.mobileread.com/forums/sho...d.php?p=588443 There is some kind of test connector similar or the same as on PRS-505 from Igorsk pictures but pads are so small I would be very scared to solder anything to them. But maybe you could take a look at cramfs.Rootfs.img from firmware upgrade it seams it contains whole system, second partion (or first probably) is kernel (raw.Linux.img). I'm not familiar yet with the system used by sony to update firmware but in my opinion it is just flashing those 2 files to their respective partitions. I was trying to mount cramfs file but ubuntu refused, giving me dmesg output wrong magic I compiled my own kernel with cramfs support but the effect was the same it is probably encrypted in some way. Any thoughts how to decrypt it? I tryed autorun.xml and now I was only able to get same test mode screen.