After Xiaomi 2 brushes V5, the card brush prompts that the signature update authentication failed, the line brush returns to native 4. 1, and the screen is unresponsive. How to solve it?

Hello,

I suggest you back up the MIUI system first to see if it can be used normally. If there are still problems, you can go to Xiaomi for after-sales inspection.

M 2 wire brush is introduced in detail: /forum.php? View thread & tid = 6052618

Brush package address:/thread-5773585-1-1.html.

Thank you for your support and wish you a happy life!

Welcome to ask questions on Baidu Xiaomi Enterprise Platform: /c/xiaomi/

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