Which boot loader is used for nrf52840?

[Nikunj_17]

I want make my own for so i need a boot loader so which ic is used for boot loading for nrf52840?

[Hieu]

Hello,

For the nRF52840, it depends on which SDK you are using.

If you are using the older nRF5 SDK, the bootloader is documented in our infocenter website.
For example, with nRF5 SDK v17.1.0, you can get started here: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.1.0/lib_bootloader_modules.html

If you are using the newer and recommended nRF Connect SDK, the bootloader is based on MCUboot.
For example, with nRF Connect SDK v2.1.0, you can get started here: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.1.0/mcuboot/index-ncs.html

Best regards,

Hieu