Which IAR embedded version should be used for nRF52840 PCA10056?

Question

Hi, 
 I am using IAR embedded version 7.40 and my board is nRF52840 PCA10056,while i was checking devices list in IAR IDE under NordicSemi i can see only nRF51 series devices and no nRF52 series.which version will be supporting for my board and i changed SDK versions also but no clue. 
 can anyone help me which IAR version should i have to use for my nRF52840 PCA10056? 
 Thank you 
 Regards,
Sankeerthan

Jørgen Holmefjord · Accepted Answer

The IAR version used for testing and verification of each SDK release, is documented in the release notes (found in documentation directory). You should be able to use your IAR version with any SDK, but you need to install the MDK for IAR from the SDK directory to add support for newer devices. This support is not built-in to the SDK or IAR version.