A bootloader makes it possible to update a product’s firmware in the field. Common communication interfaces like UART, I2C, SPI or USB can be used to update the firmware, which typically involves a wired connection between the bootloader host and the target. With the help of a Bluetooth-to-serial adapter, the same bootloading operation can be performed wirelessly. This becomes extremely useful if the target is located in an area that’s very hard to access physically or
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