Toshiba e-STUDIO2330C Service Handbook page 486

[B] When the update of HDD program data / system firmware / UI data (master data) failed
Check HDD harness connection.
Check HDD/ROM version.
" 8.4 Confirmation of
NO
Is HDD/ROM version correct?
e-STUDIO2330C/2820C/2830C/3520C/3530C/4520C
FIRMWARE UPDATING
USB update failed
Failed twice or more?
YES
Update USB.
Update succeeded?
YES
the updated data "
YES
Update completed
NO
Update USB.
NO
Replace HDD.
Update USB.
YES
Update succeeded?
Replace SYS board.
Update USB.
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NO