Master Boot Record and bootloader

The SoftDevice supports the use of a bootloader. A bootloader may be used to update the firmware on the SoC.

The nRF52 software architecture includes a Master Boot Record (MBR) (see Figure 1). The MBR is necessary in order for the bootloader to update the SoftDevice, or to update the bootloader itself. The MBR is a required component in the system. The inclusion of a bootloader is optional.