# update os - PiKVM Handbook
Open and cheap DIY IP-KVM on Raspberry Pi
Author: Maxim Devaev

# update os

Updating PiKVM OS

To update, run following commands under the `root` user:

    [root@pikvm ~]# pikvm-update

If you encounter an error like:

    [root@pikvm ~]# pikvm-update
    bash: pikvm-update: command not found

It's most likely you have an old OS release. You can update the OS as follows:

    [root@pikvm ~]# curl https://files.pikvm.org/update-os.sh | bash

Next time you will be able to use the usual method with `pikvm-update`.