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I hacked MiBand 3, and here is how I did it Part II — Reverse Engineering to upload Firmware and Resources Over the Air | by Yogesh Ojha | Medium
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Amazon.com: Xiaomi Mi Band 7 Activity Tracker High-Res 1.62" AMOLED Screen, Bluetooth 5.2, 120 Sports Modes, Optical Heart Rate & Blood Oxygen Sensor, 24HR Heart Rate & Sleep Monitor Smart Watch : Electronics
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