Kindle Firmware Update tool v0.13
    Copyright (c) 2009-2011 Igor Skochinsky & Jean-Yves Avenard
    Usage:
    kindle_update_tool.py e update_mmm.bin
      Extract a Kindle or Kindle 2 firmware update file. Outputs a .tgz file
      with decrypted content.

    kindle_update_tool.py m [flags] name file1 [file2 ...]
      Where flags is one of the following:
        --k2 , --k2i, --dx, --dxi, --dxg, --k3g, --k3w, --k3gb
      Makes a Kindle 2, Kindle 2 International, Kindle DX, Kindle DX International,
      Kindle DX Graphite, Kindle 3G or Kindle 3 WiFi OTA firmware update
      file from the list of files.
      "name" is the update file suffix (final file will be called
      update_name.bin).
      Any file with .sh extension will be marked as a shell script to be
      executed.
      Flags:
        --k2:   generate a package for Kindle 2
        --k2i:  generate a package for Kindle 2 International
        --[dx|DX]:   generate a package for Kindle DX
        --[dxi|DXi]: generate a package for Kindle DX International
        --[dxg|DXg]: generate a package for Kindle DX Graphite
        --k3g:   generate a package for Kindle 3G
        --k3w:   generate a package for Kindle 3 WiFi
        --k3gb:  generate a package for Kindle 3G UK

        Flags for Firmware 2.2 and later:
        --sign: generate signed images.
                This is required for firmware 2.2 and later.
        --ex:   the generated package will install without the need to first
                install new RSA keys to the kindle (also called jailbreaking).
                It is imperative that the install script works 100%. As should
                they fail, it could leave your kindle in a corrupted state
                preventing to install future official Amazon updates.
                BIG FAT WARNING:
                This doesn't work anymore since firmware 2.4, and thus shouldn't
                be used when generating a package for current firmwares.
                No-op when generating a package for Kindle models always using
                firmware 2.5 or later (DXg, k3g, k3w, k3gb).

        Flags for Firmware 2.5 and later:
        --[fd|FD]:   generate a FD03 OTA update (instead of a FC02)
        --[fb|FB]:   generate a FB01 MANUAL (recovery) update (instead of an OTA FC02).
        --[fb2|FB2]: generate a FB02 MANUAL (recovery) update (instead of an OTA FC02).
                     Probably not working right now, but here for completeness sake.

    kindle_update_tool.py c [flags] name tarname]
      Convert a GZIPPED TAR file into a Kindle DX, Kindle 2, or
      Kindle 2 International OTA firmware update file.
      "name" is the update file suffix
      (final file will be called update_name.bin).
      Flags:
        --k2:   generate a package for Kindle 2
        --k2i:  generate a package for Kindle 2 International
        --[dx|DX]:   generate a package for Kindle DX
        --[dxi|DXi]: generate a package for Kindle DX International
        --[dxg|DXg]: generate a package for Kindle DX Graphite
        --k3g:   generate a package for Kindle 3G
        --k3w:   generate a package for Kindle 3 WiFi
        --k3gb:  generate a package for Kindle 3G UK

        Flags for Firmware 2.5 and later:
        --[fd|FD]:   generate a FD03 OTA update (instead of a FC02)
        --[fb|FB]:   generate a FB01 MANUAL (recovery) update (instead of an OTA FC02).
        --[fb2|FB2]: generate a FB02 MANUAL (recovery) update (instead of an OTA FC02).
                     Probably not working right now, but here for completeness sake.