This device now comes with a Wi-Fi module incompatible with TasmotaTuya-Convert might not be possible for this device since the template was added (2019-12-13). All new Tuya devices have firmware preventing flash but it is still possible to Tuya-Convert old stock devices without connecting them to the Tuya app.
Update 6 June 2021: The Geeni Surge Mini is now being sold with the incompatible Tuya WB3S chip.
It is possible to successfully desolder this chip from the daughterboard (e.g. with a heat gun) and replace it with an ESP-12F to continue using the template on this page.