Solved! Launch PRO3 V+ ELITE Won’t Read X431 Key Programmer

February 24, 2025 admin X431 Diagnostic Tablet 0

Question:

X431 Key Programmer cannot be connected to Launch X431 PRO3 V+ ELITE. The tool won’t read it and showed “Device SN not found. please connect the device and retry”. Software cannot identify the tool. How to fix it?

Answer:

Connect X431 Key Programmer to the PRO3 V+ ELITE using an OTG cable.

Done!

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