====== Update of the linux kernel via network ======

The linux kernel can be updated while the system is still operational. For this the kernel image is copied to the target system using SCP (Linux //scp//-command or [[http://winscp.net/eng/index.php|WinSCP]] for Windows), for example to "///tmp/uImage//". Afterwards the following command has to be executed **on the target** as user //root//:

<code bash>
dd if=/tmp/uImage of=/dev/mmcblk0p2 ibs=512 seek=256 conv=sync,notrunc
</code>

The target system can be accessed via the serial interface (console) or SSH (Linux //ssh//-command or [[http://www.chiark.greenend.org.uk/~sgtatham/putty/|Putty]] for Linux and Windows).

**Using a linux workstation** this can be done in just one step (supposing the IP addresse of the targets is //172.16.135.170//, the kernel image //uImage// is located in the current directory):

<code bash>
ssh root@172.16.135.170 dd of=/dev/mmcblk0p2 ibs=512 seek=256 conv=sync,notrunc <uImage
</code>

At the next restart the system will boot the new kernel.