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## Why Do We Need Bootloaders?
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Imagine you've deployed hundreds of devices in the field and discover a bug in your firmware. Without a bootloader, you'd need to physically retrieve each device and reprogram it with a dedicated programmer (like an ISP programmer). With a bootloader, you can update the firmware remotely over UART, SPI, I2C, or even wirelessly!
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Imagine you've deployed hundreds of devices in the field and discover a bug in your firmware. Without a bootloader, you'd need to physically retrieve each device and reprogram it with a dedicated programmer (like an ISP programmer). With a bootloader, you can update the firmware remotely over UART, SPI, I2C, USB, etc. or even wirelessly!
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