Can you roll back Dell BIOS update?
Generally, while Dell does not recommend downgrading the system BIOS due to the enhancements and fixes provided in BIOS updates, Dell does provide the option to do so. … Dell has made downgrading the system BIOS as simple as downloading the BIOS version desired and following the onscreen installation wizard.
How do I roll back my Dell BIOS?
If the correct system is already selected, then in the pull-down menus, choose the BIOS Category. If a different version of the BIOS is required from the one shown, click Other versions available, a box opens below. Select the required BIOS version then click Download File.