Dumping with 8 GB SDHC - Firmware Dumping - CHDK Forum supplierdeeply

Dumping with 8 GB SDHC

  • 11 Replies
  • 5242 Views
Dumping with 8 GB SDHC
« on: 07 / April / 2008, 22:20:14 »
Advertisements
I know that firmware can be dumped using a phototransistor, but I was hoping to take the easy way out by using the universal dump method.

Problem is that I ordered an 8 GB card (No autoboot? I almost regret it at this point!) so it's not bootable. I want to dump the A590 firmware, so is there a way I can force the card to format as FAT16 in order to try out the universal dumper? Also, if I am able to format the card as FAT16, is it temporary enough that I can reformat as FAT32 when I'm finished with the firmware dump? My knowledge of computers tells me yes, but I've never tried such a thing so I'd like to make sure before I send my money spiraling into the abyss.

Any help is greatly appreciated.

-Square

*

Offline mx3

  • ****
  • 372
Re: Dumping with 8 GB SDHC
« Reply #1 on: 08 / April / 2008, 00:26:48 »
skype: max_dtc. ICQ: 125985663, email: win.drivers(at)gmail, eVB decompiler

Re: Dumping with 8 GB SDHC
« Reply #2 on: 08 / April / 2008, 03:58:09 »
Deleted
« Last Edit: 22 / April / 2008, 16:48:45 by Barney Fife »
[acseven/admin commented out: please refrain from more direct offensive language to any user. FW complaints to me] I felt it imperative to withdraw my TOTAL participation. Nobody has my permission, nor the right, to reinstate MY posts. Make-do with my quoted text in others' replies only. Bye

Re: Dumping with 8 GB SDHC
« Reply #3 on: 08 / April / 2008, 05:38:59 »
I wanted to use the 32 MB MMC card the camera came with, but my understanding was that the Lock switch had to be on for the card to be bootable, and well, the MMC card doesn't have a lock switch. :x

Is there a way to get around the lock switch problem? If there is then I'd much rather do that.

Also, I tried formatting the 8 GB card as FAT16 in the DOS command prompt, but during the verification process before the format I get an error saying the card is too large to be formatted in FAT16. From there the format process just stops without my choosing. Any way to get past this in the event that I can't manipulate the MMC card?

Thanks again,

-Square
« Last Edit: 08 / April / 2008, 05:42:53 by Squarewave »


*

Offline mx3

  • ****
  • 372
Re: Dumping with 8 GB SDHC
« Reply #4 on: 08 / April / 2008, 05:56:21 »
joke(maybe): you can drill hole on mmc card in place of lock (but you will not be able to write to it after that :-) )
I don't need to switch read-only lock for use with PC (my card reader ignores this switch so I can write to read-only SD-Card)

what operation system do you use?

on my XP box I have this:
Code: [Select]
E:\>format /?
Formats a disk for use with Windows XP.

FORMAT volume [/FS:file-system] [/V:label] [/Q] [/A:size] [/C] [/X]
FORMAT volume [/V:label] [/Q] [/F:size]
FORMAT volume [/V:label] [/Q] [/T:tracks /N:sectors]
FORMAT volume [/V:label] [/Q]
FORMAT volume [/Q]

  volume          Specifies the drive letter (followed by a colon),
                  mount point, or volume name.
  /FS:filesystem  Specifies the type of the file system (FAT, FAT32, or NTFS).
  /V:label        Specifies the volume label.
  /Q              Performs a quick format.
  /C              NTFS only: Files created on the new volume will be compressed
                  by default.
  /X              Forces the volume to dismount first if necessary.  All opened
                  handles to the volume would no longer be valid.
  /A:size         Overrides the default allocation unit size. Default settings
                  are strongly recommended for general use.
                  NTFS supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K.
                  FAT supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).
                  FAT32 supports 512, 1024, 2048, 4096, 8192, 16K, 32K, 64K,
                  (128K, 256K for sector size > 512 bytes).

                  Note that the FAT and FAT32 files systems impose the
                  following restrictions on the number of clusters on a volume:

                  FAT: Number of clusters <= 65526
                  FAT32: 65526 < Number of clusters < 4177918

                  Format will immediately stop processing if it decides that
                  the above requirements cannot be met using the specified
                  cluster size.

                  NTFS compression is not supported for allocation unit sizes
                  above 4096.

  /F:size         Specifies the size of the floppy disk to format (1.44)
  /T:tracks       Specifies the number of tracks per disk side.
  /N:sectors      Specifies the number of sectors per track.

maybe switch /A will help you
/F
« Last Edit: 08 / April / 2008, 05:59:04 by mx3 »
skype: max_dtc. ICQ: 125985663, email: win.drivers(at)gmail, eVB decompiler

Re: Dumping with 8 GB SDHC
« Reply #5 on: 09 / April / 2008, 06:11:00 »
I managed to get the SD card formatted as a 2 GB FAT16. I spent a few hours trying to use the universal dump methods posted around the boards, but nothing seemed to work.

*I copied bootable.exe to the root folder
*I copied (one trial at a time) each diskboot.bin to the root folder
*I copied the 8 mb empty.dum file to the root folder
*I executed diskboot.exe in the console and confirmed the card was bootable

I even tried a card formatter posted on the forums here somewhere called CardTricks that is supposed to make cards into universal dumpers.

None of the above methods worked, each time I powered on the camera it merely displayed "Card Locked!" and functioned like normal. No black screen or anything, I was even able to power it off if I wanted to. (Of course I waited 15 seconds first, just in case it was working).

Any other ideas?

I just found the guide on using udumper.zip for the Ixus 960is, I'll try this method first and post with my results.

Thanks for your continued help

-Square
« Last Edit: 09 / April / 2008, 06:36:36 by Squarewave »

*

Offline whim

  • ******
  • 2023
  • A495/590/620/630 ixus70/115/220/230/300/870 S95
Re: Dumping with 8 GB SDHC
« Reply #6 on: 09 / April / 2008, 06:38:14 »
Why not try and find a small card somewhere ? Considering you can get 1 GB cards for 10 Euro or less, you should be
able to find an old 32 or 64 MB SD 2nd hand for next to nothing ? Or just borrow one, you don't need it for long anyway ...

wim
« Last Edit: 09 / April / 2008, 07:07:29 by whim »

*

Offline mx3

  • ****
  • 372
Re: Dumping with 8 GB SDHC
« Reply #7 on: 09 / April / 2008, 06:39:10 »
I managed to get the SD card formatted as a 2 GB FAT16. I spent a few hours trying to use the universal dump methods posted around the boards, but nothing seemed to work.

*I copied bootable.exe to the root folder
no need for that because it is windows executable (it helps to make dump but don't do it)

*I copied (one trial at a time) each diskboot.bin to the root folder
*I copied the 8 mb empty.dum file to the root folder

udumper writes dump to "sectors" .it is very primitive and know nothing about file systems.
with SD card reformated udumper data goes to area inside of this file.
else it can go into area wich is not inside of this file.
so be sure you reformated card.


*I executed diskboot.exe in the console and confirmed the card was bootable

I even tried a card formatter posted on the forums here somewhere called CardTricks that is supposed to make cards into universal dumpers.

None of the above methods worked, each time I powered on the camera it merely displayed "Card Locked!" and functioned like normal. No black screen or anything, I was even able to power it off if I wanted to. (Of course I waited 15 seconds first, just in case it was working).

Any other ideas?

Thanks for your continued help

-Square
skype: max_dtc. ICQ: 125985663, email: win.drivers(at)gmail, eVB decompiler


*

Offline mx3

  • ****
  • 372
Re: Dumping with 8 GB SDHC
« Reply #8 on: 09 / April / 2008, 06:41:16 »
also there is a posibility like this universal dumper - one more idea
skype: max_dtc. ICQ: 125985663, email: win.drivers(at)gmail, eVB decompiler

Re: Dumping with 8 GB SDHC
« Reply #9 on: 11 / April / 2008, 01:28:44 »
I found a 128 MB SD card that my brother wasn't using and tried it out with the same dump methods, still no luck. :( Also tried starting the camera while holding down some buttons, did it in playback mode, etc etc.

I guess Canon changed something in the A590 firmware. :| Oh well. Thanks everyone for your help, I guess I'll wait for someone more experienced to figure this out. It must be beyond my brain capabilities :P

-Square

 

Related Topics