There is no official, centralized firmware repository, making this the most challenging step. Here are the common places to look:
Check your current firmware version via the LCD screen navigation menu (usually the last few screens, labeled as U1 and U2 ). easun firmware update
. Because EASUN inverters are often clones of Voltronic Axpert designs, using the wrong firmware version can brick the device. Power Forum Pre-Update Checklist Identify Version There is no official