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Nrf51822 custom pcb bootloader flashing

Hi I am developing a custom PCB for the nrf51822 chip. I heard the nrf51822 chips do not come with preloaded firmware or bootloader. Do I need to also flash the bootloader first onto the nrf51822 chip before I can test applications. (I know for BLE applications there is SoftDevice stack), but I want to test LED blinky program first. Thanks!