Tip

• E3 V2 uses a TF card for firmware flashing by default
• Please prepare a TF card with a capacity no greater than 32G
• Low-quality memory cards may cause flashing failures. Please try to use the recommended memory cards below for firmware updates
• The transfer speed of the TF card should preferably be class10 or higher, or class10 or higher. It is recommended to use TF cards from brands such as SanDisk

Firmware Flashing Instructions

Selecting the Firmware Type

Please confirm the connection method first

• Without using a CAN toolboard: Please select USB firmware.
• When a CAN toolboard is required: Please select USB-to-CAN Bridge Firmware.
• Only one of the two firmware types can be selected; do not flash both at the same time. The E3 V2 firmware is flashed using a TF card.

Firmware Type	Applicable Scenario	Advantages	Confirm Before Selecting	Operation
USB Firmware	When not using a CAN toolboard	Stable communication, simple configuration	When not using a CAN toolboard, please use the USB firmware	Compile USB Firmware
USB-to-CAN Bridge Firmware	When a CAN toolboard is required	Can connect multiple CAN devices, reduces USB usage	Select only when a CAN toolboard is needed; confirm CAN wiring, terminal resistors, and CAN baud rate configuration are consistent	Compile USB-to-CAN Bridge Firmware