Given the hardware is nearly identical to generic STM32 dev boards, a community effort could port an open-source oscilloscope firmware (e.g., MiniDSO , Scoppy ). However, the component tester requires precise timing and pin control, which is less documented.
This often happens if the USB cable is moved during the transfer. Format the device's internal "virtual drive" (if possible) and try again with a different cable.
The FNIRSI DSO-TC2 is a remarkable tool for the bench, but its soul is the firmware. Whether you are a hobbyist testing a salvaged capacitor or a technician chasing a glitchy signal, an outdated firmware build is a bottleneck you cannot afford.
