How can the size of a ota dfu update be calculated?

[jerome.sc]

Hello,

I'm developing an application that will include over the air updates. I read the infocenter information about how the dfu works, with either dual-bank or single-bank updates.

My question is how would I know the size of my update, and to know if my application will be too large for a dual-bank update? Is it as simple as reading how large the files (application, bootloader and/or SoftDevice is) I add to my zip folder to be sent ota? 

[SwRa]

Hi Jerome,

To know the memory used and the available memory, you could just use the programmer app in nRF Connect for Desktop as it shows the exact space used by the bootloader, application and so on..

Regards,

Swathy