Easun Firmware Update [upd] | 2026 Edition |

: Navigate to the LCD menu (usually the last few screens) to note your current U1 (Main CPU) and U2 (Secondary CPU) versions. Stable Power

Q: Will updating my Easun firmware void my warranty? A: No, updating your Easun firmware will not void your warranty, as long as you follow the recommended update process. easun firmware update

Use the serial-to-Ethernet (RJ45) cable provided with your unit, as pin configurations vary by model. RS232 to USB Adapter: : Navigate to the LCD menu (usually the

Go to the LCD menu on your inverter and find the U1 (Main CPU) and U2 (Secondary/Remote CPU) versions. You must match these versions exactly. Use the serial-to-Ethernet (RJ45) cable provided with your

"Easun" is often a rebrand of Voltronic Power units (Axpert). Check your sticker for the specific model (e.g., ISolar SMG II, SML III, or IGrid).