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#26 MedEvil

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Posted 13 January 2012 - 08:38 PM

-Can one buy u3s easily? Would be interesting to try out.

If you act quickly, you should still be able to get hold of some.

SanDisk Cruzer Micro Skin is a U3 one
SanDisk Cruzer used to be one, not sure about the most recent version.
SanDisk Cruzer Contour Extreme is a U3 one.

Other manufacturers had U3 sticks too.

:cheers:

#27 betrand

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Posted 13 January 2012 - 08:39 PM

For my defense, etc


To be forgiven :P, here's the dump I got.
(see attachment)
Openschemes site says the dumper is Dos. Which was strange. It is command line. (NT) ;)

Attached Files



#28 betrand

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Posted 13 January 2012 - 08:48 PM

If you act quickly


Are they stopping them, why?
(wouldn't be too useful for me now, but interesting)



Hehe! Sector64 of bin is, Cdrom :).




OK, adding a dump.


Here is a dump of the photo frame with a smiley.

and the original smiley, and the uploaded/downloaded to /from device.
If you wanna see the difference.


See ya.

Attached Files



#29 MedEvil

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Posted 13 January 2012 - 09:19 PM

U3 was declared officialy dead in 2009.
SanDisk was the last one to still support it.

:cheers:

#30 betrand

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Posted 15 January 2012 - 11:53 AM

Hi Medevil :)
Oh well no worries.

Who would have used them? What would the purpose have been?

Can the Cdrom part be used as a boot media?

r.

#31 Wonko the Sane

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Posted 15 January 2012 - 02:30 PM

Just for the record.

Most if not all USB stick controllers allow for:
  • two LUN's
  • one of the two being a CD-ROM like device
U3 was just a fancy name and a sort of portable desktop:
http://www.u3applications.com/about

A typical common example are the UT165 based sticks, still rather common.

Of course you can boot from the USB CD-ROM (as long as your BIOS supports it), compare with:
http://www.msfn.org/...sandisk-cruzer/
http://www.msfn.org/...165-usb-sticks/

:cheers:
Wonko

#32 MedEvil

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Posted 15 January 2012 - 04:56 PM

Just for the record.

Most if not all USB stick controllers allow for: two LUN's

Really? Didn't knew that. I always thought that chips that allowed 2 LUN were the exeption and basicly only existed in U3-Sticks.

@betrand
Yes you can boot off both LUN's just fine, as long as the BIOS supports it.

:cheers:

#33 betrand

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Posted 16 January 2012 - 07:38 PM

Ok so,

We want to know more now about the Hack, the reverse engeneering.

Some notes.

If you open the cdrom from Windows, in Hex, you'll get the contents, whithout the bootsector.
If you look at the dump (post 27), opened (as a HD) in hex (I use HXD),
you will get the contents of the CDRom at sector 64.
Just before that, at 63, you have some space; I am not saying it is useable, but you get some space.
Before that it is a mix of Device boot, ie menu, choice (clock, connect) and Cdrom boot.

After the end of the CDRom, space for the pictures.
The first 10000h, from sector 1,'they say', DON'T TOUCH.
Edit, there seems to be more CDRom going on after large area.
As if there was a second copy.

The guys behind the reversing are using the last spaces for the pictures for their own code.

Other than that :dubbio: .

Some links, for those interested, are helpful:
https://github.com/m...b/master/README is a general Readme.
https://github.com/m.../reverse/README is the Reverse Readme.

Tools:
AX20xDump_Tool (google it)
Tools, for the device.
Find them at http://openschemes.c...photo-frames/2/ ,
in the X206 Firmware Source Code and SDK (9MB), under tools I think.
The AX206_HW_Bootflasher, @ http://openschemes.c...-that-was-easy/ link.

General links, with discussions:
http://tech.section5.ch/news/?p=68
http://tech.section5.ch/news/?p=77


Come on, anyone!

#34 betrand

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Posted 17 January 2012 - 08:13 PM

Hiya!

While I'm not sure drumming up interest will help get anywhere this being quite a limited project, Hardwarewise and O.Swise,
I will carry on posting bits n bobs might be interesting.



Linked from the Readme posted yesterday, a german page
In german for the links to work: http://geekparadise....y-fur-dockstar/,
translated: http://translate.goo...kstar/&act=url.


On http://tech.section5.ch/news/?p=77,
you can read

UPDATE: The bootloading protocol is now decoded. Code can be loaded on bricked frames, we are going to update our flash update tool soon. A brief intro how it works:
When the DPF goes into Bootloader mode (showing USB ID 1908:3318), it expects max. 64 byte size USB interrupt messages with a header and payload data. The header implements a simple Remote Procedure Call format through the bootload handler. Its format is as follows:


typedef struct {

unsigned char len;

unsigned char chk;

unsigned char jmp[2];

union {

  // Structures for various backends

  // The default memory loader:

  struct {

   unsigned char offset[2];

   unsigned char buf[BUFSIZE];

  } loader;

  struct {

   unsigned char opcode;

   unsigned char n;

   unsigned char buf[16];

  } spi;

} u;

} UsbMsg;


A readme from https://dpf-ax.svn.s...x/trunk/README.

They use Debian.

r.

#35 MedEvil

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Posted 17 January 2012 - 08:29 PM

Sure go ahead and keep posting, someone might find it useful.

For drumming up interest.
One does not do that be explaining, how something is done, but by explaining, what something is useful for and how much it improves ones life / makes ones work easier.

Basicly, you have to sell a dream.

:cheers:

#36 betrand

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Posted 19 January 2012 - 05:31 PM

Before anyone says anything, it IS tongue-in-cheek. :hammer:

Possibly,
the best tool in the world!



On a par with the swiss army knife, the spare wheel, and photorec!



Because you know the Queen, the President, and four other people.

"Once in a forest my chainsaw was broken. We needed to cut down a tree. Luckily, Small Steve had brought his swiss army-knife, and we were able to do the job.Slowly, yeah, but got there."

"Joe the farmer always did his shopping on the same day, every month. He had a very small car to get there -miles-, but he once thought out a system to carry more food in his very small car. By removing the spare wheel, he could get another sack of potatoes in the boot. Everything fine, he even became fatter (by approx. 1 sac(of potatoes)). But, one day, the car got a puncture. He had to walk back home - a long way! carrying the food with him. (he even pushed the car half the way -in the snow.). From that day he always had that wheel with him."

We know everyone through 6 people. SO we know someone with a broken screen. And they aren't happy. They only need one file. One. For work. They could oh so easily copy it, to a stick, if they could just see where the mouse was going.
Just a small thingy, even a blur of the mouse, but at least... You know, just like Photorec, small, CLI, you gotta rename files afterwards,
but , so helpfull!!

(Insert "Uncle Sam" picture here)

Photorec saves files. Why can't you, with your dodgy screen? I mean OK, breaking a screen is seldom.
But when it happens,
You'll be happy you have....

(Insert name of project here)


With [name of project], you can

-carry a screen around all the time without knowing it.

-Save files if really one day you're in the s**t.

-have a fun project around with you

-carry your keys, too.

Usb connection!
Integrated drivers!
Possible boot tool itself!


Mmm, shame about the double-spacing of the lines formatting. The gist of the add is there, though.
Edit:
I am crap at adds. :)

#37 betrand

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Posted 20 January 2012 - 01:33 PM

As happily linked to by TheHive, THe Raspberry Pi.

Similar, the bifferboard. Had seen it a week ago, forgot the link.
Here, the bifferboard with MC (midnight commander) on LCD.

http://noshbar.xtree...ffmc/index.html

Midnight Commander at 128x128:
A link to a video which does not come up.
Google


Don't need no advertising ;)
:thumbsup:

http://1.bp.blogspot.../s760/main1.jpg




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