# Root CA Installation Guide

Some Chargers require the installtion of the Root CA. This guide will help you with this process.

# Alfen

* Download the root certificates below and unzip them to *.fwi
  * Using connection via public internet or own SIM card download Amazon Root CA1 certificate [here](https://images.exolink.com/rootCA/Amazon_Root_CA_1-B+1.zip).
  * Using connection via APN SIM card download Global-Root-G2 certificate [here](https://images.exolink.com/rootCA/DigiCert_Global_Root_G2-B.zip).
* Navigate to General / General
* Choose the Root certificate under the firmware file location
* Start Upload