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ChromeOS Kernel Versions

What is a kernver and what does it mean for me?​

Kernel verisons, often referred to as kernvers, are what chromebooks use to lock down how low of a version you can update to.

If you are on these kernvers, these are the minimum chromeos versions you can use.

KernverMinimum Chromeos Verison
0any
1any
2v111
3v120
4v125

Determining your kernver​

  1. Hold esc+power+refresh for a bit less than a second
  2. Once the recovery screen appears, press tab
  3. It should show a line that starts with "TPM:" and ends with "0", "1", "2", "3", or "4". If its a higher number, this doc is probably not up to date. The number it ends with is your kernver.
Image Showing where the line is and what the menu looks like, the TPM line ends with 3, so it is on kernver 3.

How to downgrade​

For info on how to downgrade, go here.