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Here you can find latest hack progress reports and other raw information.


recent entries   

Donate for GH1 hack project! 

-April 23, 2010

GH1 firmware update research 

-April 19, 2010

GH1 related 

-April 17, 2010

More info on Panasonic 

-April 14, 2010

Panasonic Cameras 

-April 12, 2010

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april 2010

march 2010

september 2009

august 2009


General (13)

Dumping (1)

Disassembling (5)

Features (0)


Friday, April 23, 2010


We need your help to obtain GH1 body for experiments, as we can't risk cameras belonging to ordinary users until all testing will be complete.
Go to www.gh1-hack.info and donate, even $5 could be very helpful.
If you donate more then $25, email me with request and your name to be present in dvxuser.com thread, on this blog and on upcoming www.gh1-hack.info front page!

General  comments (162)

Monday, April 19, 2010


Panasonic original V1.12 firmware update:




My firmware manipulation tool




We need you to test some parameters of update procedures


Detailed instructions:


1) Place prool.zip and GH1__V12.zip inside one folder.

2) Extract both archives and delete zip files.

3) Now you must have five files - ptool.exe, make1.bat, make2.bat, make3.bat, GH1___112.BIN

4) Run make1.bat (minimal risk version patch, firmware are touched only at the digest part)

5) Copy resulted GH1___113.BIN to SD card and follow firmware update instructions from Panasonic.

6) Send here results.

7) Make same things from 4) with make2.bat and make3.bat.



Info for experts :-)


ptool.exe gh1_112.bin gh1_113.bin -vdt


Makes new encoded binary file and applies three patches (remove any characters from parameter to apply less patches)


-d Makes bad digest - Lowers risk

- t Simple one char text patch, makes SUNSITIVITY :-) - I don't see much risk here

-v Patching version number in three places


Please, note that you must change firmware name to GH1___113.BIN


1) Try to load firmware by just changing name

2) Apply digest and/or text patches, try again.

3) Most probably nothing changes until version patch will be applied.


Update must show some error if digest is really checked.


If update runs smoothly without checking digest we can save many hours.


Report each and every step and photo screen in case of error.


P.S. As always, no one can quarantee that you camera will work after this :-) But I do not touched any code, so all must be ok, just error messages at initial update phase.

P.P.S. This will not improve your camera in any way, this is just for research purposes.

General  comments (3)

Saturday, April 17, 2010


Current progress of GH firmware reversing can be found at:
I'll upate my blog with more technical informaton soon.
If you have dead GH1 (dropped, completely broken, non-functional parts) contact me, please.
I will be also very grateful for any information that you have, but it private information or one that can ve released to public.

Disassembling  comments (1)

Wednesday, April 14, 2010


Here is additional info for Panasonic cameras reversing.
Loading address for GH1 seems to be 0x40000000.
Fixed some nasty bug in processor module (reload it if you need).

General  comments (0)

Monday, April 12, 2010


All Panasonic photo cameras use proprietary LSI chips.
CPU command set looks like NM103.
If you want to research or modify GH1, TZ5, TZ7 etc firmware here are necessary tools
My firmware manipulation tool
It allow you to strip all unnecessary info and disassembly firmware, after modification you can use same tool to make all necessary checksums.
Unfortunately this version can't recalculate big 32 byte digest at the end of firmware.
According to my information it uses double MD5.
MN103 module compiled for IDA 4.9 Free
So, you don't need to pay anything and can legally disassembly Panasonic firmware files.
Original module source author is Hitman, plus few other guys who worked on jump tables.

Disassembling  comments (4)

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