I'm still having problem updating all of my switches. Can anyone suggest any solution?

@Brook Hi Brook, Thank you for your reply. I'm in Japan. I updated Kasa app (ver. 2.27.0 build 835) but the situation is the same. Is there anyway I can update it? Best,

Hi, I have below smart switches but none of them can't update firmware through Kasa app. - 6 units of HS200, Hardware=3.0, Firmware=1.1.3 - 7 units of HS200, Hardware=2.0, Firmware=1.5.7 - 13 units...