Toshiba e-STUDIO6520C Service Handbook page 618

[C] When the update of Engine ROM / PFC ROM failed / Scanner ROM failed
USB update failed
Failed twice or more?
YES
Clear [Update Error Flags].
Assist Mode :
Turn the power ON with [3] +
[CLEAR] + [ON/OFF]
Clear flags.
[1] - > [START]
Update download jig.
" 8.2.3 Engine ROM "
" 8.2.4 PFC ROM "
" 8.3.1 Scanner ROM "
Update succeeded?
YES
Check ROM version.
" 8.4 Confirmation of
the updated data "
Is ROM version correct?
YES
Update completed
e-STUDIO5520C/6520C/6530C
FIRMWARE UPDATING
NO
Update USB.
NO
Failed twice or more?
Replace target board.
NO
Update USB.
8 - 54
Check harness connection.
SYS board < -- > SYS board
NO
YES
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