: Connect the device to your computer. Open the FNIRSI PC software and select the appropriate communication port found in your computer's Device Manager Enter Update Mode in the software. Once successful, navigate to the "Firmware Upgrade" section and select "BOOT/Restart" to put the device into upgrade mode. Transferring Files
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.
I can provide the direct flashing tool instructions tailored to your specific setup. Share public link
Are you currently facing a specific or hardware issue that you're hoping a firmware update will fix?
Your device must be in a special mode to accept new software. Turn off the DSO-TC2 completely. fnirsi dso-tc2 firmware
The is the internal software that controls the device's operations . Keeping your FNIRSI DSO-TC2 updated is the best way to resolve system glitches, improve transistor test accuracy, and unlock better performance from its built-in digital oscilloscope. 🛠️ What is the FNIRSI DSO-TC2 The FNIRSI DSO-TC2 Go to product viewer dialog for this item.
Despite being built on open-source code, the DSO-TC2’s firmware is . Fnirsi does not release the source code or the toolchain. This has frustrated the hacker community, who would otherwise fix bugs, add features (like better triggering or serial decoding), or port the firmware to other devices.
Use a high-quality data cable, not a cheap charging-only cable.
Despite its 200kHz bandwidth being a limitation for high-frequency work, it is widely praised for its high precision in component testing, portability, and excellent value for its price. : Connect the device to your computer
Flashing firmware carries a small risk of bricking your device if interrupted. Prepare your workspace with these essentials:
In the crowded market of cheap handheld oscilloscopes, the FNIRSI DSO-TC2 occupies a strange and fascinating niche. On the surface, it looks like a miracle of integration: a 2-in-1 device combining a digital oscilloscope and a transistor tester (similar to the famous TC1/T7 testers), all for a remarkably low price.
This is usually caused by a loose cable or USB power saving settings. Turn off the device, restart the computer flashing software, re-enter Bootloader Mode, and try again. White Screen After Update
Press and hold the key while flipping the power switch on. Transferring Files Where the component tester excels, the
is a highly popular, budget-friendly 2-in-1 handheld test instrument. It cleverly combines two essential workshop tools:
Operating system and firmware updates for test equipment are crucial for maintaining accuracy. For the DSO-TC2, a firmware update can provide several benefits:
Use a USB-C cable that supports data transfer (D+ and D- pins), not just charging.
Ensure the device is truly in bootloader mode. If it boots straight to the normal oscilloscope screen, it will reject the firmware write request.