Consequence of not updating network core (nRF5340)

[ned_zeppelin]

If the network core can't be updated (due to not having enough flash, for example), does this mean that the application SDK can't safely be updated either (long term)?

And is there a table or overview listing breaking changes or compatibility between network core version and SDK version?

[SwRa]

Gi Sigurd,

It is not adviced to update only the application core. On the nRF5340, when the interface between the application core and the network core is updated, both images must be updated simultaneously. If the network core cannot be updated and a new SDK version changes the inter-core interface, updating only the application core could lead to incompatibility.  Unfortunately, we don't have a compatibility matrix for this. You will need to go through the release notes and migration guides of each SDK versions.

Best Regards,

Swathy