OS-upgrade via data cable?

[StephanP]

Is it possible to transfer an OS upgrade from one device to another using the data cable?

My search through the user manual did not give any results and also a brief experiment with two G2 devices did not give any hint towards this functionality.

Maybe it says something about my students or about me as their teacher, but in my experience, it is virtually impossible to get all students to upgrading their calculator themselves using a connectivity kit on their PC/laptop.
The option to transfer the OS-upgrade via the data cable allows me to upgade all my students' devices quickly and easily.