How to organize a flashing of an Embedded Linux device?

Question

linux

Let's say I have a board with linux on board and I want to completely update the file system.
Is it possible to do this remotely (over the network)?

Answer 1

Yes. load the image to a disk in memory, then flash it.
the router with OpenWRT is changed like that.

Answer 2

You can not be so harsh, but use the package system, collect your new packages and roll out updates to the server.