Before searching for files, check if you actually need an update. Turn off your DSO-TC2. Press and hold the button to boot the device. Look closely at the boot splash screen.
Use the proper Type-C data cable to connect the device to your computer while it is still off. Then power it on and wait for approximately two seconds.
Drag and drop the appropriate firmware file (CHD for oscilloscope or CHT for transistor tester) directly into the "CH BOOT" drive.
Copy the .bin firmware file starting with MM into this "MM BOOT" disk. fnirsi dso-tc2 firmware
Updates often refine menu navigation and speed up the user interface.
If your device is on V1.3 or earlier, updating to V2.x is a game-changer.
Most FNIRSI firmware flashing tools are designed for Windows operating systems. Before searching for files, check if you actually
is based on the popular "transistor tester" project, there is significant community interest in porting or improving the software EEVblog Forum
Click or look for an active COM port matching your tool. Click Start Update or Burn .
You will typically need the CH340 or ST-Link USB-to-Serial drivers installed on your computer, depending on the internal microcontroller used in your production batch. Step-by-Step FNIRSI DSO-TC2 Firmware Upgrade Process Look closely at the boot splash screen
Because FNIRSI utilizes a straightforward USB bootloader mode for most of their modern gear, the process can usually be completed without opening the shell. Step 1: Download the Official Firmware
This open-source foundation explains both the strengths and weaknesses of the tester side. The firmware reliably identifies thousands of components, measures parameters like hFE (transistor gain) and Vf (diode forward voltage), and displays pinouts—all within seconds. However, the legacy code also introduces peculiarities: the tester can be confused by very low-value resistors or high-capacitance capacitors, and it occasionally misidentifies complex components like JFETs. The firmware does not improve upon the open-source algorithms; it merely repackages them. In this sense, the DSO-TC2’s firmware is a compilation rather than a creation —a pragmatic choice that keeps development costs near zero.
What’s improved