MobileRead Forums - View Single Post - PRS-600 Communication with "subcpu" (button and touchscreen controller)

Xaphiosis · 09-10-2010, 12:19 AM

First: I wrote something incorrect above. It's always been HOME and VOL+. Not OPTION. I apologise for the brain fart. Correct sequence is: start normally, go to home screen, insert SD card (which has "/Sony Reader/software/autorun.xml" on it) while holding HOME and VOL+.

I would suggest, before desoldering from the board, to just go over to someone's house/office with a windows machine and try a flash from there. I normally use linux on all my machines, but my laptop is capable of booting into some outdated version of XP for precisely these circumstances (or get a rescue CD with usb capabilities).

Once you can convince yourself that flashing and arbitrary code execution is possible on your device, then you will not only be happier, but you can figure out how to recreate the situation under linux, which would be a big benefit to the linux-using PRS hackers like me (having to find and boot my laptop to flash my 600 is very tedious).

Taking customelectric's observation that the 900's kernel sources have stuff related to subcpu in subcpu.h that the 600's kernel sources do not, I have found that SONY is already distributing the 650's sources, so it might be worth going hunting around inside those to see if I can find anything new.

09-10-2010, 12:19 AM	#52
Xaphiosis Connoisseur Posts: 52 Karma: 216 Join Date: Apr 2010 Device: PRS-T1	First: I wrote something incorrect above. It's always been HOME and VOL+. Not OPTION. I apologise for the brain fart. Correct sequence is: start normally, go to home screen, insert SD card (which has "/Sony Reader/software/autorun.xml" on it) while holding HOME and VOL+. I would suggest, before desoldering from the board, to just go over to someone's house/office with a windows machine and try a flash from there. I normally use linux on all my machines, but my laptop is capable of booting into some outdated version of XP for precisely these circumstances (or get a rescue CD with usb capabilities). Once you can convince yourself that flashing and arbitrary code execution is possible on your device, then you will not only be happier, but you can figure out how to recreate the situation under linux, which would be a big benefit to the linux-using PRS hackers like me (having to find and boot my laptop to flash my 600 is very tedious). Taking customelectric's observation that the 900's kernel sources have stuff related to subcpu in subcpu.h that the 600's kernel sources do not, I have found that SONY is already distributing the 650's sources, so it might be worth going hunting around inside those to see if I can find anything new.