How to solve the problem that Tiggo 8usb cannot be read?

When the Tiggo 8 is plugged into a USB flash drive, the song format should be mp3 first, and then your USB flash drive format should be fat32 before the host can recognize it. Universal serial bus (USB) is a serial bus standard and a technical specification for input and output interfaces. Usb is widely used in personal computers, mobile devices and other information communication products, and extends to photographic equipment, digital TV (set-top box), game machines and other related fields. The latest generation is USB3. 1, the transmission speed is 10Gbit/s, the three-stage voltage is 5V/ 12V/20V, and the maximum power supply is 100W. The new TypeC plug-in is no longer positive or negative. USB is an external bus standard, which regulates the connection and communication between computers and external devices. USB interface has hot plug function. USB interface can connect various peripherals, such as mouse and keyboard. USB was jointly launched by companies such as 1996 1994. It has successfully replaced serial port and parallel port and become an essential interface for computers and a large number of intelligent devices. After years of development, the USB version has now developed to version 3.0. For most engineers, the main obstacles to developing USB2.0 interface products are: facing the complex USB2.0 protocol, writing USB device drivers by themselves and being familiar with the programming of single chip microcomputer. This requires not only considerable VC programming experience, but also hardware (firmware) programs that can write USB interfaces. So most people give up developing their own USB products. The USB3.0PromoterGroup, composed of industry giants such as Intel, Microsoft, Hewlett-Packard, Texas Instruments, NEC and ST-NXP, announced that the next-generation USB3.0 standard formulated by the organization has been officially completed and publicly released. The theoretical speed of USB3.0 is 5.0Gb/s, but it can only reach 50% of the theoretical value, which is close to 10 times that of USB2.0. The physical layer of USB3.0 adopts 8b/ 10b coding, so the calculated theoretical speed is 4Gb/s, and the actual speed is less than 4Gb/s after deducting the protocol overhead. It can be widely used in PC peripherals and consumer electronic products.