# Change kernel version

Some features may be limited depending on the kernel version.
Need to change the kernel version, use the method below.

## Install kernel from package server

Below is an example of changing to kernel version 5.9.0.

```Bash
sudo apt update
sudo apt install linux-image-5.9.0-odroid-arm64
sudo flash-kernel --force 5.9.0-odroid-arm64
```


## View installed kernel list
Use `linux-version` command, you can see list of installed kernel list.
```Bash
linux-version list
5.9.0-odroid-arm64
5.9.15-odroid-arm64
```

## Change kernel
Use `flask-kernel`.
```Bash
sudo flash-kernel --force 5.9.0-odroid-arm64
```