: Do not attempt to flash firmware files found on unofficial forums (like "Game Stick" firmware) to your solar logger. The LSW-3 uses specific protocols (V4 vs. V5) based on its serial number (e.g., those starting with 17xxxxxxx vs 21xxxxxxx ). Flashing the wrong version can permanently brick the device and stop your solar monitoring.
: This can take several minutes. Do not interrupt the process or turn off the device. lsw3 firmware free
Since Solarman builds the LSW-3, their help center often hosts the most universal firmware versions. B. Community Forums and GitHub : Do not attempt to flash firmware files