1) there is a code in FLASH(ROM) which can load files from SD card without loading of OS (Rescue Loader code)
2) it is unknown if Rescue Loader contain code which can write to SD card when OS unitialized ( it is logical there must be no one)
3) when diskboot.bin is loaded and executed SD card controller (if it exists) already initialized
4) Running OS must have some primitive functions to read/write sectors which can work without OS initialized5) my camera(a630) can work with SD and MMC cards . I don't know how camera operates with any of them and if there is a difference
lets get to the point:1) we load .bin file2) OS is unitialized3) .bin file code finds SD/MMC sector read/write functions using signatures4) .bin file writes dump into SD/MMC card
I discovered some minor problem. Some of the firmware files are incomplete and lack the rescue loader. Thus they can't be examined.
Another problem may be the write-protect that triggers the bootdisk-loader and may prevent writing the card.
It would be rather ugly - but if you got the rest of it working you could have the user boot the camera, and then after a few seconds remove the SD card and replace it with the lock switch turned off...
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General Discussion and Assistance
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