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Insyde H2O Firmware


The first few Google ChromeOS devices used a custom firmware based on a proprietary base often referred to as "H2C". It's a 64 bit UEFI BIOS from Insyde named H2O ("Hardware-2-Operating System"), but a lot of code/features have been stripped out to significantly speed things up. Basically, everything not needed to boot ChromeOS was removed.

Unfortunately, this also means the firmware source cannot be released.

Version Info

The version numbers can be broken down like so:

Here is an example from the CR-48: