Digi 9P 9360/9750 Updating a running system the easy way, Updating a running system manually

A d v a n c e d T o p i c s

Updating a running system (the easy way)

On a running system, that is a system able to start the boot loader, U-Boot contains pre- defined macros that can update the on-module flash memory.

If the boot loader is corrupted, you have to first use a debugger to restore the boot loader which then can be used to restore the remaining images.

Power up (or reset) the target. After 2-4 seconds, the boot loader messages appear on the serial port. Hit any key to interrupt the auto-boot process. You can break into the U-Boot command line interface by pressing any key.

There are 3 main flash partitions: U-Boot, kernel image, and a root file system. To update a partition using a TFTP server, run one or more of the following macros from the U-Boot prompt:

#run update_uboot_tftp

#run update_kernel_tftp

#run update_rootfs_tftp

You can also copy the images onto a vfat formatted usb-stick, connect it to the target, and run one or more of these macros from the U-Boot prompt:

#run update_uboot_usb

#run update_kernel_usb

#run update_rootfs_usb

Updating a running system manually

Advanced users may want to have more control over the flash update process. In this case, use the steps below to update an image on a running system. It is presumed you are using the memory layout as described in Appendix A of this document.

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For more information about the use of U-Boot commands, refer Appendix A or the related documentation in Appendix B.

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