Intel S5000PSL User Guide - Page 43

Reverting to the Previous BIOS - bios update

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Reverting to the Previous BIOS If you encounter a problem with your BIOS, you may want to revert to the previously installed BIOS. Because of the rolling BIOS feature, your server contains two versions of the BIOS: the current BIOS, and the BIOS that was previously installed. Note: If you upgrade the BIOS more than once with the same BIOS version, the two versions of the BIOS stored in your server will be identical. To revert to the previous BIOS: 1. Power down the server and disconnect the AC power. 2. Open the chassis. See your chassis documentation for instructions on removing the chassis cover. 3. Locate the BIOS Bank Select jumper at board position J1C3. See Figure 6. 4. Move the jumper from the normal operation position, covering pins 2 and 3, to the Bank_0 position, covering pins 1 and 2, as shown by the diagram. BIOS Bank Select 2 3 J1C3 Force Lower Bank Normal Operation (default) AF000475 Figure 6. BIOS Bank Select Jumper in Force Lower Bank Position 5. Close the chassis. 6. Reconnect the AC power and power up the server. The BIOS will boot to the previous BIOS until you either move the jumper again or until you perform another BIOS update. Intel® Server Board S5000PSL 25

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Intel
®
Server Board S5000PSL
25
Reverting to the Previous BIOS
If you encounter a problem with your BIOS, you may want to revert to the previously
installed BIOS. Because of the rolling BIOS feature, your server contains two versions of
the BIOS: the current BIOS, and the BIOS that was previously installed.
Note:
If you upgrade the BIOS more than once with the same BIOS version, the two versions of
the BIOS stored in your server will be identical.
To revert to the previous BIOS:
1.
Power down the server and disconnect the AC power.
2.
Open the chassis. See your chassis documentation for instructions on removing the
chassis cover.
3.
Locate the BIOS Bank Select jumper at board position J1C3. See
Figure 6
.
4.
Move the jumper from the normal operation position, covering pins 2 and 3, to the
Bank_0 position, covering pins 1 and 2, as shown by the diagram.
Figure 6. BIOS Bank Select Jumper in Force Lower Bank Position
5.
Close the chassis.
6.
Reconnect the AC power and power up the server.
The BIOS will boot to the previous BIOS until you either move the jumper again or until
you perform another BIOS update.
AF000475
BIO
S
Bank
S
elect
J1C3
3
2
Force Lower
Bank
Normal Operation
(default)