Bambu Lab: LAN-only mode and developer mode - how to enable

In this guide, we'll show you how to enable "LAN-Only" mode on your Bambu Lab printers, and enabling the new "Developer mode", which, with Bambu Lab's newer firmware, will allow you to keep having your printer fully compatible with SimplyPrint *(learn more here; Bambu Lab: printer stopped working after firmware upgrade / can't start prints anymore)*

What is LAN-only mode?

LAN-only mode lets you have your printer only connected to your local network; this means it won't connect to the Bambu Lab cloud or any other services; only your local network.

For SimplyPrint users, with the new "security firmware" that Bambu has released, LAN-only mode - with "Developer mode" enabled (you'll learn more about that in a second) - allows you to keep your printer working with SimplyPrint even on the latest firmware versions.

One drawback of having your printer in LAN-only mode, is that you won't be able to use the official Bambu Lab "Bambu Handy" app for iOS and Android - but, fear not; the SimplyPrint app has got you covered, and will still work even if your printer is in LAN-only mode!

What is developer mode?

"Developer mode" was introduced in these firmware versions for the following printers:

• For X1-series printers it was added in firmware version 01.08.03.00
• For A1-series printers it was added in firmware version 01.05.00.00
• For P1-series printers it was added in firmware version 01.08.02.00
• For the H2D printer it was added in firmware version 01.01.00.01

This new mode can be enabled for LAN-Only mode printers, and will allow them to keep working with SimplyPrint.

Enabling LAN Only Mode

Bambu Lab's wiki includes a guide on how to do this; https://wiki.bambulab.com/en/knowledge-sharing/enable-developer-mode

This YouTube video by "Print Practical" shows you how to do it for the P1 and A1 series;

On any Bambu Lab printer, LAN Only Mode can be enabled by going to the printer, and on the screen go to;

• Settings
• WLAN / network settings
• Enable "LAN Mode Only"

Enabling Developer Mode

On all Bambu Lab printers with the latest firmware, once LAN Only Mode is enabled, you should see a "Developer Mode" option in the same settings menu; enable this.

Bambu Lab's wiki page has a guide on this; https://wiki.bambulab.com/en/knowledge-sharing/enable-developer-mode

Updated on: 21/06/2025