tip

• E3 V2 defaults to using an SD card for firmware burning
• Please prepare an SD card with a capacity of no more than 32G
• Counterfeit memory cards may lead to burning failure, please try to use the recommended memory cards below for firmware updates
• The transmission speed of the SD card should be at least class10, it is recommended to use SD cards from brands like SanDisk

Firmware Burning Instructions

How to Determine Which Firmware You Need

tip

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

• E3 V2 can connect to the host computer in the following ways
• USB Firmware
  • Pros: Reliable and stable communication
  • Cons: May affect data transmission if multiple USB devices are present
• USB Bridge Firmware
  • Pros: Can connect multiple devices without occupying USB ports
  • Cons: May cause errors such as homing timeout when used with KlipperScreen