The is a widely popular, budget-friendly 2-in-1 handheld digital oscilloscope and transistor tester. Electronics hobbyists value it for its versatility, packing a 200kHz analog bandwidth scope, a PWM signal generator, and an automated component analyzer into a single compact chassis.
Flashing new firmware to your test device is not just about getting the newest version number. It can fundamentally change how the tool performs on your workbench.
The screen should remain black, or display a "USB" icon, indicating it is in U-Disk/Bootloader mode. fnirsi dso-tc2 firmware
Before updating, check your current firmware version to see if a newer version is actually available. Turn on the DSO-TC2. Navigate to the menu (gear icon). Scroll down to the About or Version section.
: Latest official versions (such as v1.0.6 or higher) generally focus on refining the transistor tester logic and UI responsiveness in oscilloscope mode Hardware Variants The is a widely popular, budget-friendly 2-in-1 handheld
Use a USB-C cable that supports data transfer (D+ and D- pins), not just charging.
The Ultimate FNIRSI DSO-TC2 Firmware Guide: Upgrades, Flashing, and Custom Fixes It can fundamentally change how the tool performs
FNIRSI occasionally changes the internal microcontrollers (MCU) in their production batches without changing the model name. Always open your device or use the software tool to read the chip ID before flashing a firmware file to prevent a hard brick. How to Check Your Current Firmware Version
Follow these steps carefully to ensure a seamless update process. Step 1: Download the Official Firmware and Drivers
Swap out the USB-C cable. Many bundled cables are charge-only. Try a different USB port on your PC, preferably a USB 2.0 port directly on the motherboard rather than a front-panel hub. 2. Update Fails Mid-Way or Throws an Error
The FNIRSI DSO-TC2 combines a 2.5 MS/s oscilloscope with a transistor/component tester, priced under $60. It targets hobbyists and educational users. However, users have reported bugs: inaccurate voltage measurements, screen glitches, and component tester misclassifications. Since FNIRSI does not release source code or detailed changelogs, the only path to bug fixes or feature enhancements is reverse engineering.