According to the official FNIRSI User Manual , there are two distinct upgrade paths depending on which system you are updating:
Because of this dual-chip architecture, . You must flash the files one at a time via two completely different bootloader modes.
: Plug the Type-C data cable into the device and connect the USB-A end to your computer.
Copy the firmware file (starting with the prefix "CHD" for the oscilloscope or "CHT" for the transistor part) into the "CH BOOT" drive.
Complete Guide to FNIRSI DSO-TC2 Go to product viewer dialog for this item. Firmware Updates The FNIRSI DSO-TC2 dsotc2 firmware upd
Once the screen reads "Update Successful" , close the tool. Disconnect the USB cable. Perform a hard reset of the DSOTC2 by removing the battery (if removable) or holding the power button for 15 seconds.
features a split architecture, it contains separate microcontrollers for its oscilloscope and transistor-testing operational environments. This technical blueprint requires two distinctly managed firmware installation processes. Why Update Your
The system will automatically restart once the upgrade is finished. ⚠️ Critical Notes
is a multifunctional 2-in-1 handheld device that combines a digital oscilloscope with an electronic component/transistor tester. Updating its firmware is essential for improving waveform measurement accuracy, expanding component support, and fixing functional bugs. Overview of Firmware Upgrade Modes The According to the official FNIRSI User Manual ,
into bootloader mode. Failing to use the correct hardware tools can cause data packet drops during the transfer process.
: A USB-A to USB-C data cable . (Note: USB-C to USB-C cables fail to trigger the bootloader properly on this device ). A PC Operating System : Windows 10 or Windows 11 computer.
Refines waveform processing routines, reducing screen visual stutter across Auto, Regular, and Single trigger sweeps.
Ultimate Guide to FNIRSI DSO-TC2 Firmware Updates: Fix Bugs & Unlock Features Copy the firmware file (starting with the prefix
Downloaded from the official TC Electronic website. Power Supply: Ensure the
With the right preparation and careful execution, your DSOTC2 firmware update should complete successfully, leaving you with an optimized, reliable instrument for all your electronics testing needs. Whether you're a hobbyist working on weekend projects or a professional technician diagnosing complex circuits, keeping your DSOTC2's firmware current ensures you always have access to the best possible performance and accuracy from your device.
| Error Message | Likely Cause | Solution | | :--- | :--- | :--- | | | Driver not installed or bad USB cable.| Reinstall drivers. Try a different USB port (USB 2.0 preferred over USB 3.0). | | "Checksum Mismatch" | Corrupted download file.| Delete the updater file. Redownload it from the official source. Disable antivirus during download. | | "Timeout Error" | Low power or interference.| Charge the DSOTC2 for 2 hours. Disable Bluetooth/WiFi on your PC. | | Device freezes on logo | Interrupted previous update.| You must perform a "Recovery Mode" flash. Hold Power + Volume Down for 10 seconds, then reconnect to the updater. | | "No VIN recognition post update" | Firmware updated, but car database missing.| You likely need to also update the Vehicle Database file (separate download, usually an .iso or .db file). |