Bios Recovery; Rollback Bios Feature; Bios Recovery Using Hard Drive - Dell Latitude 3300 Owner's Manual

NOTE:
Front-line Agent Action: Front-line agents must encourage the customer to perform this step before isolating the issue as a
motherboard failure. If the customer is not comfortable performing the Self-Heal procedure, then please document the dispatch being
created in 5GL. Advise the onsite engineers to perform the Self-Heal procedure as one of the mandatory initial steps. Advise them that
if the Self-Heal procedure is unsuccessful, to continue with the regular troubleshooting before part replacement.
Onsite Engineer Action: The Latitude Self-Heal procedure has to be a mandatory initial step. If the Self-Heal procedure is
unsuccessful, continue with the regular troubleshooting before part replacement. Document Self-Heal results in the call closure log
(Self-Heal Pass or Fail).

BIOS recovery

The BIOS recovery is designed to fix the main BIOS, and cannot work if the boot is damaged. The BIOS recovery will not work in the event
of EC corruption, ME corruption, or a hardware related issue. The BIOS recovery image should be available on the unencrypted partition on
the drive for BIOS recovery feature.

Rollback BIOS feature

Two versions of the BIOS recovery image are saved on the hard drive:
• Current running BIOS (old)
• To-be-updated BIOS (new)
The old version is already stored on the hard drive. The BIOS adds new version to the hard drive, maintains the old version, and deletes
other existing versions. For example, A00 and A02 versions are already on the hard drive, A02 is the running BIOS. The BIOS adds A04,
maintains A02, and deletes A00. Having two BIOS version enables the Rollback BIOS feature.
If the recovery file cannot be stored (hard drive is out of space), the BIOS sets a flag to indicate this condition. The flag is reset in the
event it later becomes possible to store the recovery file. The BIOS notifies the user during POST and in BIOS Setup, the BIOS recovery is
degraded. BIOS recovery through hard drive may not be possible, however BIOS recovery through USB flash drive is still possible.
For USB key: root directory or "\"
BIOS_IMG.rcv: the recovery image stored on the USB key.

BIOS recovery using hard drive

NOTE: Ensure that you have the previous version and the latest version of the BIOS from the Dell support site available to use.
NOTE: Ensure that you have the file type extensions visible in the operating system (OS).
1 Browse to the location of the BIOS update executable (.exe) files.
2 Rename the BIOS executable files to BIOS_PRE.rcv for the earlier version of the BIOS and BIOS_CUR.rcv for the latest version of
the BIOS.
For example, if the latest version's file name is PowerEdge_T30_1.0.0.exe, rename it to BIOS_CUR.rcv and if the previous version's
file name is PowerEdge_T30_0.0.9.exe, rename it to BIOS_PRE.rcv
NOTE:
a If the hard drive is new, there will be no OS installed.
b If the hard drive has been partitioned at the Dell factory, there will be a Recovery Partition available.
3 Disconnect the hard drive and install the hard drive into another system that has a full operational OS.
4 Start up the system and in the Microsoft Windows OS environment follow these steps to copy the BIOS recovery file to the Recovery
Partition.
146 Diagnostics