I can't reset my airpod max, it doesn't ever flash white after amber.. also it keep disconnect from my iphone so I can't usei t.

Hello hanzhang164,

We know it's important for your AirPods Max to stay connected to your devices, thanks for reaching out.

Let's make sure you're using the latest iOS version on your iPhone to confirm the software is working as expected: Update your iPhone, iPad, or iPod touch

The steps on our Apple Support page can help make sure they are paired correctly: Connect and use your AirPods Max

Cheers!