This is the most challenging and dangerous step. Do not proceed unless you are certain the firmware is intended for your specific inverter model and hardware revision.
Many users have reported issues updating via a USB flash drive and an OTG adapter, a method often recommended by support. easun firmware update
Click or Browse inside the tool to locate and select the new firmware file ( .hex or .bin ). Phase C: Executing the Flash This is the most challenging and dangerous step
If you want me to help find the specific firmware file for your model, please let me know: The (found on the side of the inverter) The current firmware version (from the display or software) What specific bug or feature you are trying to fix I can help check if a newer version is available. Share public link Click or Browse inside the tool to locate
You gain features (like Pylontech CAN bus V2.0), but you lose Easun-specific fan curves. The Benefit: Axpert firmware is updated quarterly. Easun firmware might be years old.
Connect the communication cable to the port of the inverter. Plug the other end into your computer's USB port. Step 4: Run the Flashing Utility
Bricked EASun SMW8k inverter during FW upgrade - DIY Solar Forum