Xiaomi buds 4 pro firmware July 8, 2019 16 32 64 128 Xiaomi buds 4 pro firmware update Xiaomi buds 4 pro прошивка Xiaomi buds 4 pro global firmware Xiaomi redmi buds 4 pro firmware Xiaomi redmi buds 4 pro firmware download Xiaomi buds 4 review Redmi buds 3 pro firmware Xiaomi buds 4 pro приложение Redmi buds 4 pro reset