Merge branch 'main' into dev

readme.rst

@@ -44,6 +44,16 @@ You can check that that your installation is setup correctly by running one of t
 
 ``runBatteryP2D``
 
+Update
+------
+
+To update you code after you installed it as described above, use the standard :code:`git pull` command. If your installation has been done before November 7th 2024, you will need to update also the submodule setup and run
+
+``git submodule update --init --recursive``
+
+If you encounter problems, you can simply install again the code (the installation steps above does not take long anyway).
+
+
 Iterative solvers
 -----------------