The recommended way to upgrade is to write a stable disk image to the sd card.  If you want to get the latest changes, or upgrade without reimaging, see [[upgrading from git]]

Before upgrading with a new disk image, it is advised to backup the pypilot.conf file, and copy it back again.   If you are upgrading through a package manager this is not an issue.

All of the pypilot settings are stored in a small text file pypilot.conf.  This file is in json format and can be edited with a text editor.

  - tinypilot - located in /home/tc/.pypilot/pypilot.conf
  - openplotter - located in /home/pi/.pypilot/pypilot.conf

Copy this file somewhere before overwriting the disk image, and copy it back afterwards.

If you do not, it will be a fresh pypilot without [[calibration]] and you will need to recalibrate and adjust all of the settings again.

For upgrading microprocessors see [[upgrading arduino sketches]]