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Without an internet connection
1.
Download the latest .cab file from secure-lvfs.rhcloud.com/lvfs/devicelist.
2.
Check the current BIOS details.
$ sudo uefi-fw-tools.fwupdmgr get-devices
3.
Copy the firmware.cab file to /root/snap/uefi-fw-tools/common/ folder.
$ sudo cp firmware.cab /root/snap/uefi-fw-tools/common/
4.
Check the details of the BIOS from the .cab file.
$ sudo uefi-fw-tools.fwupdmgr get-details [Full path of firmware.cab]
5.
Apply the update.
$ sudo uefi-fw-tools.fwupdmgr install [Full path of firmware.cab] -v
6.
Restart the system.
$ sudo reboot
With an internet connection
1.
Connect and login to the Edge Gateway.
2.
Check the current BIOS details.
$sudo uefi-fw-tools.fwupdmgr get-devices
3.
Check if the update is available from LVFS service.
$sudo uefi-fw-tools.fwupdmgr refresh
4.
Download the BIOS from the www.dell.com/support.
$sudo uefi-fw-tools.fwupdmgr get-updates
5.
Apply the update.
$sudo uefi-fw-tools.fwupdmgr update -v
6.
Restart the system.
$ sudo reboot
Watchdog Timer
NOTE: For more information about Watchdog Timer (WDT) commands, see
Linux-Watchdog.html.
It is recommended that you enable the WDT by default to activate the fail-safe circuitry. Snappy, a WDT-compatible operating
system provides the capability to detect and recover the system from malfunctions or unexpected crashes.
To check daemon status, run the command:
admin@localhost:$ systemctl show | grep –i watchdog
Returns:
RuntimeWatchdogUSec=1min
ShutdownWatchdogUSec=10min
NOTE: The default value is 10. The actual value should be greater than 0.
To configure the timer, run the command:
admin@localhost:$ sudo vi /etc/systemd/system.conf.d/watchdog.conf
Security
Trusted Platform Module (TPM)
NOTE: For more information about the TPM, see https://developer.ubuntu.com/en/snappy/guides/security-whitepaper/.
38
www.sat.dundee.ac.uk/~psc/watchdog/
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