[Error Code] Error A0-15 sharp mx m503n

[Svchost]

Hi, im trying to fix this problem on a sharp copier the fault error is A0-15, i really investigate in this forum and i find the solution is install the firmware again i wonder if some one can help me with the firmware download, i really apreciate your help.
This is the description of the error
A0 15 DSK BOOT VERSION DISAGREEMENT