Canon iR4570 Series Service Manual page 975

Be sure never to turn off the power while the machine is executing a downloading session or writing downloaded
software. The ongoing session will be suspended and the machine may fail to start up.
If the machine fails to start up, format BOOTDEV using HDFormat and then download such software as System,
Language, and RUI.
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<<<<< download shell >>>>>
[ SYSTEM JPja-m ] - - - -
Upgrading complete
[ SYSTEM ZZ ] - - - - - - -
Upgrading complete
[ SYSTEM JPja-w ] - - - -
Upgrading complete
[ SYSTEM ZZ ] - - - - - - -
Writing to HDD XX%
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Chapter 17
17-19