These instructions will allow you to set the date and time on the Ultimaker S3 / S5 by logging into the printer and executing commands to set the date and time. This is useful for situations where the local network port 123 has been blocked. 

Prepare the printer

• Make sure the printer is connected to the internet, learn here how

Disable the firewall

• If you have the firewall disabled, you can skip this step.
• Navigate to the 'Firewall' option by selecting the icon on the bottom left of the screen and selecting 'Network'.
• Scroll down to the 'Firewall' setting and toggle it off.

Developer mode should usually be disabled for security reasons.

Enable the 'Developer mode'

• If you have 'Developer mode' enabled, you can skip this step.
• Navigate to the 'Settings' menu by selecting the icon on the bottom left of the S5 screen and then select settings.
• Scroll down and select 'Developer mode'.
• Select activate to enable 'Developer mode'. The printer will reboot.
  
  

Logging in into your printer

To update the printer, you will need to connect to the printer on the network using an SSH client. This will give you access to the printer via a command prompt. 

How you connect via SSH depends on your system:

• Linux and MacOS:  in a terminal window
  • connect by typing ssh root@<ip-address>
• Windows: Use a SSH agent, such as PuTTy (Download)
  • In host name type: root@<ip-address>
  • Leave the rest of the options default
  • Press open
  • When prompted to accept the servers host keys, select 'Accept' 

Executing the commands

Once the connection is made you are prompted to log in.

• Type yes and press enter to accept the connection (Linux / MacOS only)
• Type in ultimaker as the password and press enter
  • The password will not be displayed as you type it
• Type date --set date <yyyy-mm-dd> 
  So for setting it to 25 November 2021, you'd type date --set 2021-11-25
• Type date --set date <hh:mm:ss>
  So for setting the time to 5 o'clock in the afternoon, you'd date --set 17:00:00
• Type reboot and press enter
• You can now close your SSH client.

Setting the printer back up

Disable the 'Developer mode'

• If you had 'Developer mode' enabled before following this guide, you can skip this step.
• Navigate to the 'Settings' menu by selecting the icon on the bottom left of the S5 screen and then select settings.
• Scroll down and select 'Developer mode'.
• Select activate to enable 'Developer mode'. The printer will reboot.

Re-enable the firewall

• If you didn't have the firewall enabled before following this guide, you can skip this step.
• Navigate to the 'Firewall' option by selecting the icon on the bottom left of the screen and selecting 'Network'.
• Scroll down to the 'Firewall' setting and toggle it back on.