https://solsolhelp.zendesk.com/hc/cs/sections/24300853351325

https://solsolhelp.zendesk.com/hc/cs/articles/19142079395997-Growatt-SPH-4000-10000-TL3-BH-UP-VERSION-Lok%C3%A1ln%C3%AD-aktualizace-update-firmware-st%C5%99%C3%ADda%C4%8De?input_string=aktualizace+fw