Hi everyone, I bought a transistor tester (LCR-T4 clone) from China about 3 or 4 years ago. It has Chinese firmware, and now I’d like to update and flash new firmware. However, the board doesn’t have any ISP header or programming pins, and I can’t read the chip marking either — it seems to be blank…

Transistor Tester LCR-T4

waterelon_616 October 11, 2025, 12:02pm 9

where can i get its source code?

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