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chromebook_kernel_tools

Kernel repacking and flashing tools for Chromebook. Please note that these tools do not stop you from flashing a bad file to your Chromebook, so be careful and have some sort of CrOS recovery media handy.

Changelog

05/02/2015: Initial commit & add basic Linux installation guide.

Requirements

  • vbutil_kernel in $PATH (sudo apt-get install vboot-utils on Debian and Ubuntu, vboot-utils in the AUR, Chrome OS ships with it)
  • kernel_data_key.vprivk from your Chromebook (/usr/share/vboot/devkeys/kernel_data_key.vprivk, place in directory with scripts)

extract_kernel

Uses dd and vbutil_kernel to extract KERN-A from Chromebook and tail the config into config.txt.

Note that this will overwrite existing kernel2 and config.txt.

repack_kernel

Uses vbutil_kernel to repack kernel2 and config.txt into repacked2.

Watch for errors! Flashing a bad kernel could lead to soft-bricking your device!

flash_kernel

Uses vbutil_kernel to verify repacked2, and then flashes to /dev/mmcblk0p2 (KERN-A).

Watch for errors! Flashing a bad kernel could lead to soft-bricking your device!