IBM Xseries 345 8670 Maintenance Manual page 47

The following illustration shows the location of the Flash boot block recovery jumper
on the system board.
System board
switch block
(SW2)
Complete the following steps to recover the BIOS code:
1. Turn off the server and disconnect all power cords and external cables; then,
remove the server cover. See the Option Installation Guide on the IBM xSeries
Documentation CD for more information.
2. Locate the Flash boot block recovery jumper block (J34) on the system board.
3. Move the jumper from pins 1 and 2 to pins 2 and 3 to enable the BIOS
recovery mode.
4. Insert the BIOS flash diskette into the diskette drive.
5. Reinstall the server cover; then, reconnect all power cords.
6. Restart the server. The system begins the power-on self test (POST).
7. Select 1 - Update POST/BIOS from the menu that contains various flash
update options.
8. When prompted as to whether you want to save the current code to a diskette,
press N.
9. When prompted to choose a language, select a language (from 0 to 7) and
press Enter to accept your choice.
10. Do not restart your server at this time.
11. Remove the BIOS flash diskette from the diskette drive.
12. Turn off the server and disconnect all power cords and external cables; then,
remove the server cover.
13. Remove the jumper from the Flash boot block recovery jumper block, or move
it to pins 1 and 2 to return to normal startup mode.
14. Reconnect all external cables and power cords and turn on the peripheral
devices; then, reinstall the server cover.
15. Restart the server. The system should start up normally.
SW2
Flash boot block
recovery jumper
(J34)
37
Chapter 3. Diagnostics