Step 1: Connect mTiny to your computer via the original USB cable.
Make sure to connect to the mTiny with the end with the mTiny robot icon on it.
Step 2: Find the firmware file on the mTiny disk.
Normally, the mTiny disk folder should open automatically once mTiny is connected to a computer.
Open Folder system>mtiny firmware>car_master_mcu_firmware.
Step 3: Open the mcu_firmware_discription.csv file with Notepad.
You may find the firmware version below.