[App] AFT 1.3.2 - Ambarella firmware editor (development paused)

Discussion in 'Firmware Modifications' started by Tobi@s, Jun 18, 2014.

  1. Tobi@s

    Tobi@s Well-Known Member App Developer

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    Would require some deep digging in the assembly code of the firmware. Its most likely not just a button value that needs to be changed
     
  2. Dabbede

    Dabbede New Member

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    Can you or Tobi@s explain when and how the cable should be used?
    I own an action camera (Andoer AN8000, Ambarella based) which is bricked and I don't have a working firmware to overwrite.. Will the cable be of any help?
    Thanks
     
  3. jokiin

    jokiin Well-Known Member Manufacturer

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    No idea if it would help, not familiar with the camera you have
     
  4. Tobi@s

    Tobi@s Well-Known Member App Developer

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    You need an .elf file of the firmware to flash it with DirectUSB. Theres also a tool called AmbaUSB, not sure if this one is cablable of flashing firmware binaries
     
  5. Dabbede

    Dabbede New Member

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    Ok, thanks! One last question: if I find some user with an unbricked camera, is it possible to dump the elf firmware from it?
    If yes, is DirectUSB the proper tool to do that?
     
  6. Tobi@s

    Tobi@s Well-Known Member App Developer

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    Would be worth a try. AmbaUSB/DirectUSB should be able to dump the firmware
     
  7. ruckusman

    ruckusman New Member

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    @Tobi@s and @Falsificator are you able to assit in my search for the video bitrate table for the Ambarella A9.

    I have posted here

    https://dashcamtalk.com/forum/threa...mbarella-based-cameras-using-aft.10220/page-2

    I am attempting to locate the bitrate table in a firmware from a DJI camera using the A9s using this tool, not having any luck however as the data structures seem to dissimilar.

    I have downloaded this firmware https://dl.djicdn.com/downloads/osmo/OSMO_FC550_FW_V01.03.00.40.zip

    I have decompiled the firmware to extract the ambarella firmware elements using these tools https://github.com/mefistotelis/phantom-firmware-tools

    First I have unpacked the various total firmware package then separated the OSMO_FC550_FW_V01.03.00.40_m0101.bin into it's various elements

    From this using fgrep the command points me to the OSMO_FC550_FW_V01.03.00.40_m0100_part_sys.a9s partition as being the likely candidate.

    I am unable to locate the bitrate table this partition using the technique described above.

    Can you provide any assistance - I would like to be able to repeat the procedure for other firmware as well share the process on this page for other users
    https://github.com/mefistotelis/phantom-firmware-tools

    thanks

    Glenn

    I would like to use the A7 tool, however knowing which offset is perplexing as I don't possess a definitive hex string to identify the offset. I would like to learn this process as many DJI products utilise the A9SE and to share with the other github users
     
  8. Falsificator

    Falsificator Well-Known Member

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    The table of bitrates in the usual form is not in the firmware.
    For example in firmware VicoTF2+, V747W, StreetStorm 7620
    bitrate was registered by separate values and not in the table.
    To search it is desirable to know the exact value of the desired bitrates, to have
    an ELF in case of an osculation and boldness in order to flash your gadget...)

    Well, the guarantee that everything will be successful no one can give...
     
    Last edited: Aug 24, 2017
    jokiin, kamkar1 and Tobi@s like this.
  9. HeWhoMustNotBeNamed

    HeWhoMustNotBeNamed Active Member

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    very cool stuff! it's all Greek to me, but cool!
     
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