Toshiba e-STUDIO556 Service Manual page 927

11.4.3 System ROM (e-STUDIO557/657/757/857)
The firmware of the system ROM can be updated by using PWA-DWNLD-JIG1.
Important:
• Be sure to shut down the equipment before installing and removing the download jig.
• Do not shut down the equipment during the update. The data could be damaged and not be
able to be operated properly.
[A] Update procedure
(1) Write the ROM data to be updated to the download jig (PWA-DWNLD-JIG1).
(2) Press the [ON/OFF] button on the control panel to shut down the equipment.
(3) Take off the SYS board cover.
 P.9-1 "9.1.1 SYS board cover"
(4) Release the HDD harness from the clamp and disconnect 2 connectors [1].
*The jig connector on the SYS board[2].
(5) Connect the download jig with the jig connector on the SYS board.
(6) Press the [ON/OFF] button while simultaneously holding down the [8] and [9] buttons.
(7) Press the [Firmware Update] button, then press the [1] key to select "1.SYSTEM
FIRMWARE(OS Data)".
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[1]
[2]
Fig. 11-10
Fig. 11-11
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e-STUDIO556/656/756/856/557/657/757/857
FIRMWARE UPDATING
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