I have a bluetti ac200 max i purchased July 11 2023 on amazon. I charged it I updated firmware and put it in a closet, now I pull it out and using the app I checked for firmware updates and found a dsp update available. I tried to install it, the fans kicked on like i have read about but within seconds i am getting an error on app says upgrade failure communication disconnected please check the connection. then i get an alarm on the ac200max that says 033. spi communication error. please help.
i have tried uninstalling app clearing the cache power cycling devices. i dont have another cell phone to try the blue tooth with,i am using samsung galaxy s22 ultra
ac200max
serial 2237001432111
firmware ver
arm v4030.1
dsp v4005.07 trying to upgrade this to v4005.08
bms v1017.03
hm1 v6023.11