All Tasmota Devices need the same Username/PW set and http-api enabled.
-Set Ip-Range, Username Password, press Start, enjoy coffee
Download or open the Update-Gui: [https://braineebug.github.io/TMUP/tmup.html]
Fopen [https://braineebug.github.io/TMUP/tmup.html#ip=192.168.0&start=1&end=254&user=admin&pass=pass]