Thank you for taking interest in our device compatibility with scooters. These are the following answers to your questions
now can we use our TsT100, for the new model Xiaomi S1 Scooter?
Unfortunately, we did not analyze Xiaomi S1 model compatibility with TST100 device yet. We've mainly focused on Xiaomi M365 PRO version which should replace the standard M365 scooter. The evaluation and compatible firmware with M365 PRO is still under development/testing stage.
Can you maybe send us information on how to install the TST100 on Fitrider?
We do not have any particular instructions on full mounting recommendations on Fitrider scooters since we've only were required to do the Fitrider scooter's support from the device's firmware side and not the mounting recommendations / device hardware compatibility (specific cables with connectors). I am attaching you the instructions in which you will find the tools that we assembled inside just for testing (custom connector with re-soldered wires on TST100 PCB to be compatible with Fitrider's board connection). Please follow these instructions to understand the wiring required for Fitrider scooters.