Dso-tc2 Firmware [top]: Fnirsi
Firmware updates for the DSO-TC2 primarily focus on refining the user interface and fixing measurement bugs that users have reported in community forums like EEVblog . Key improvements often found in newer versions include:
Another symptom users have reported is a failure to complete the calibration process. If the device used to calibrate fine but now asks you to short the probes without detecting the connection, a hardware failure (like a damaged input pin) is more likely than a firmware bug. In such a scenario, the issue is probably hardware-related.
[1] Liang, O. (2020). FNirsi DSO-TC2 Firmware Update. Retrieved from https://www.oscilloscopetutorial.com/fnirsi-dso-tc2-firmware-update/
The DSO-TC2 firmware is uniquely split into two distinct components, often requiring separate updates depending on which part of the device you are targeting:
A: The user manual is available for download from the official FNIRSI website, as well as from many third-party manuals sites. For the most up-to-date version, always check the manufacturer's official support page first. fnirsi dso-tc2 firmware
Look for a drive named "CH BOOT" on your computer. Action: Copy the CHD firmware file into this drive.
| Problem | Likely Cause | Solution | |---------|--------------|----------| | PC doesn’t detect the device | Wrong USB cable (charge-only) | Use a data-sync cable or try a different USB port. | | Update tool shows "No device" | Not in DFU mode | Repeat the "hold OK + plug USB" sequence. Sometimes you need to hold for 10 seconds. | | Update fails at 50% | Wrong firmware for hardware revision | Double-check your hardware version. Downgrade to a previously working file if possible. | | Device won’t power on after update | Corrupted bootloader | This is a . You’ll need an ST-Link programmer to reflash the bootloader (advanced fix). | | Touchscreen acts weird after update | Calibration lost | Go to System Settings → Calibration → Follow the crosshair prompts. |
Check the dropdown menu for the . It should reflect the newly connected device. If not, refresh or check your Windows Device Manager.
: Boot the device and wait approximately 2 seconds. A drive named should appear on the computer. File Transfer : Copy the appropriate or firmware file (prefixed with ) into the root directory of this drive. Completion Firmware updates for the DSO-TC2 primarily focus on
Manages component identification, hFE measurements, and LCR meter functions. 🔄 How to Update
Avoid third-party forums or unverified file shares, as corrupt binaries can permanently brick the device's microcontrollers.
Click or Upgrade . A progress bar will indicate the data transfer. Do not disconnect the cable or power off your computer during this step. Once the software displays "Success" or "100%", the device will automatically reboot into its newly updated user interface. Troubleshooting Common Firmware Update Issues
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. In such a scenario, the issue is probably hardware-related
If you encounter issues during the upgrade, use these quick troubleshooting protocols:
A very specific topic!
Navigate directly to the official FNIRSI Software Downloads Portal or their dedicated FNIRSI Manuals & Firmware Hub.
: Manages the Oscilloscope functions (200kHz bandwidth, trigger modes, and waveform display).
Flashing the latest official or community-modified firmware provides immediate performance benefits: