Trying to install firmware on R50L thin client with suse Enterprise.

Using 11.1.052_R50LE_merlin image and USB imaging tool 2.1.1.2

It boots off the thumb drive and text says "GRIB loading." Then no further activity.

USB tool documentation does not include this thin client in supported models. But I cannot find an older USB tool to try with. I assume the GRUB loader is not contained in the firmware image, but the USB tool.