As of 2026, the hobbyist community continues to develop custom firmware for FNIRSI devices, aiming for: Faster refresh rates for the oscilloscope. Better resolution for testing components. Improved user interface customization.
The is a 2-in-1 (or arguably 3-in-1) device designed for electronics enthusiasts and professionals alike. Its core features include:
: Updates occasionally reset the default language to Chinese; this can be toggled back in the settings menu. 🔓 Open Source Alternatives
Set the baud rate (typically 115200 or as specified by the read-me file).
Installing these was a high-stakes gamble. It required opening the case, finding the hidden programming pads (often unpopulated holes on the PCB), and using an ST-Link programmer to overwrite the chip. It was "interesting" because it turned a consumer device into a DIY kit after you bought it. fnirsi dso-tc2 firmware
The Fnirsi DSO-TC2’s firmware perfectly mirrors the device itself: affordable, accessible, and adequate for beginners, but ultimately limited and unpolished. It succeeds brilliantly as a component tester, thanks to open-source heritage, and just barely passes as an oscilloscope for low-frequency hobby work. Yet its closed-source nature, slow UI, and lack of advanced features ensure it will never be a professional tool.
Flashing the latest firmware on your DSO-TC2 is not just about getting new features; it is often necessary for basic device accuracy.
Because official updates are scarce, the story often turns into a cautionary tale of "bricking" or failed attempts: : Attempting to force-load firmware from the
The screen may stay blank, or it may display a "Bootloader" or "Update" screen. Your PC should make a connection chime. Step 3: Configure the Flashing Tool As of 2026, the hobbyist community continues to
| Version | Known Improvements | Remaining Issues | |-----------|------------------------------------------|--------------------------------------| | 1.2.0 | Initial release – unstable | Crashes in LCR mode | | 1.3.3 | Fixed display corruption, better autoset | Trigger hysteresis too high | | 1.3.5 | Slightly faster waveform refresh | Single-shot broken, no saving of user cal |
: The device may appear as a USB flash drive on your computer. Copy the new firmware file into this drive. The device will then automatically begin the upgrade process. Completion
: You can verify your current firmware by checking the "About" or "System Info" section in the device settings.
have received multiple firmware revisions (v0.0.3 to v0.0.7) to fix UI and measurement issues, the remains largely on its factory version. The is a 2-in-1 (or arguably 3-in-1) device
will appear on the computer, and the screen will show "MM Boot" in the corner. File Transfer : Copy the firmware file (prefixed with ) into the drive.
Resolves freezing issues during component testing or waveform capturing.
This comprehensive guide will walk you through everything you need to know about the FNIRSI DSO-TC2 firmware, including why you should update, where to find official files, and a step-by-step flashing guide. Why Update Your FNIRSI DSO-TC2 Firmware?