Recover the MBR

[mamrezo]

hello i have nRF51822 QFAAH1 and accidentally erased the chip and also MBR section with jlink, what should i do for bring MBR back.

[bjorn-spockeli]

Hi Mamrezo,

the MBR is a part of ourSoftDevices, see this page on Infocenter, thus you just have to flash the SoftDevice to your nRF51822.

Best regards

Bjørn

[endnode]

Then your program obviously don't use SD (and don't need it;).