Two possibilities come to mind.
Make sure you are loading the proper OS for this device. If it is a CE Core device, make sure you are loading a CE Core OS.
Make sure the scanner trigger is not stuck down somehow. This device will go into bootloader mode if you hold the scan trigger when booting.
Same error and i found an OS correct - MC2100 Operating System Professional SKUs -- BSP 04.34.0132 - load it by useing USB Download v 1.3 and operation was done but when i restart the device, same error appear.
How i can solve it?