Tip

• The E3 V2 uses a TF card for firmware flashing by default.
• Please prepare a TF card with a capacity no larger than 32GB.
• Low-quality memory cards may cause flashing failures. Please use the recommended memory cards below for firmware updates whenever possible.
• The TF card's transfer speed should ideally be Class 10 or higher. It is recommended to use TF cards from brands like SanDisk.

Firmware Flashing Instructions

How to Determine Which Firmware You Need

Tip

• Note that you only need to flash one type of firmware.

• The E3 V2 can connect to the host computer using the following methods:
• 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 a USB port.
  • Disadvantages: When used together with KlipperScreen, it may cause errors such as homing timeout.