Tip

• The E3 V2 uses a TF card for firmware flashing by default.
• Please prepare a TF card with a capacity not exceeding 32GB.
• Off-brand memory cards may cause flashing to fail. It is recommended to use the memory cards suggested below for firmware updates.
• The TF card should preferably have a transfer speed of class10 or higher. It is advised to use TF cards from brands like SanDisk.

Firmware Flashing Instructions

How to Determine Which Firmware You Need

Tip

• Please note that you only need to flash one of the firmware types.

• The E3 V2 can connect to the host in the following ways:
• USB Firmware
  • Advantages: Reliable and stable communication.
  • Disadvantages: Multiple USB devices may affect data transmission.
• USB Bridge Firmware
  • Advantages: Can connect multiple devices without occupying USB ports.
  • Disadvantages: May cause errors such as homing timeout when used with KlipperScreen.