The flashing software executable (such as the FNIRSI firmware burner tool).

Delete the existing .bin file in the device's drive if present. Drag and drop the new .bin firmware file into the drive.

With the right firmware, the little DSO-TC2 transforms from a toy into a surprisingly capable field toolkit. Keep it updated, and it will serve you for years.

Some early units shipped with a version that didn't show the number correctly. In that case, you'll need to connect the device to a PC via USB-C (with the device powered off) to read the internal disk.

I can provide or specific driver files based on your environment.

If you're having trouble or if the device won't boot , let me know so I can help you find a mirror link or alternative fix.

: Check if a removable disk named "CH BOOT" appears on your computer.

Where the component tester excels, the oscilloscope firmware reveals the device’s cost-cutting nature. The DSO-TC2 is marketed as a 2.5 MHz analog bandwidth scope with a 10 MSa/s sampling rate—adequate for audio frequencies and basic microcontroller debugging (e.g., checking PWM signals or I2C clock lines). The firmware manages the STM32’s ADC (analog-to-digital converter) and DMA (direct memory access) to capture waveforms, then renders them on the display.

Hold down the designated boot key (usually the or POWER button, depending on the revision batch) while inserting the USB-C cable into the device.