What version of S110 and SDK should I use for nRF51822 QFAA?

[comkuk]

Hello,

Since I am still a little confused, could anyone tell me what S110 and SDK I should use for nRF51822 QFAA? (infocenter.nordicsemi.com/.../nRF51_Series_Compatibility_Matrix_v2.3.pdf)

Thanks in advance

[Kingmaster]

First, you have to check the HWID of your chip : Connect your development board to PC using a USB cable. Open nRFgo Studio => nRF51x programming, and then you should be able to see the HWID between parenthesis. Finally look at page 6 of the PDF document to know which SDK and S110 you have to use. There's another way to get the HWID (Here page 4)