Most update tools are .exe files designed for Windows.
The serial number is essential, as Easun and its manufacturing partners use it to pinpoint the exact motherboard revision.
, or iGrid). Using the wrong file will disable the inverter. Communication Cable: Usually an RJ45-to-RS232 or a USB-to-RS232 cable. Windows Laptop:
Open the flashing software provided by Easun (run as Administrator if necessary).
Proceed with caution and thoroughly research any specific model's quirks before attempting an update. easun firmware update
Load the firmware file (often named something like inv_app_xxx.hex ). Step 4: The Update Process
Wait for a popup window stating "Update Successful", "Ready", or "100% Complete". Step 5: Reboot and Verify
Depending on your model, you will need an RJ45-to-RS232 cable, an RJ45-to-USB cable, or a standard USB-B printer cable.
Disconnect the AC input (grid) breaker and the PV (solar) input breaker. Most update tools are
Plug the data cable into the inverter’s communication port (RS232 or USB) and connect it to your laptop. Step 4: Run the Flash Software
If the tool rejects the file, stop immediately. Attempting to force-flash a firmware meant for a different CPU (e.g., an ARM vs. a DSP chip) will cause permanent damage. Conclusion
: Use the specific RJ45 to DB9 (serial) cable provided with the unit, as pin configurations vary by model. Software Required :
If the flashing process freezes, simply restart the reflash tool and try again. Using the wrong file will disable the inverter
Adds updated BMS (Battery Management System) communication protocols for newer LiFePO4 battery brands.
Are you having a (like Error 04 or 09) you are trying to fix?
Many firmware updates address common bugs, including parallel operation errors (Error 42).