tip

• E3 V2 uses the TF card for firmware burning by default.
• Please prepare a TF card with a capacity of no more than 32G.
• Counterfeit memory cards may cause burning to fail, please try to use the recommended memory cards below for firmware updates.
• The transmission speed of the TF card should be Class10 or above, it is recommended to use TF cards from brands such as SanDisk.

Firmware Burning Instructions

How to determine which firmware you need

tip

• Please note that you only need to burn one of the firmwares.

• E3 V2 can connect to the host machine using the following methods
• USB Firmware
  • Advantage: Reliable and stable communication.
  • Disadvantage: If there are multiple USB devices, it may affect data transmission.
• USB Bridge Firmware
  • Advantage: Can connect to multiple devices without occupying USB ports.
  • Disadvantage: May cause positioning timeouts or other errors when used together with KlipperScreen.