Steps Perform Flash BIOS Update Using a USB Flash Drive on Dell Laptop, Desktop and All in One PCStep 1: Create a Bootable USB Flash Drive using Dell Diagnos.. Locate the most recent system BIOS. Click "Download" to save the file. Once finished, double-click the file to initiate the installation. Boot from USB and flash the BIOS update. If your laptop won't boot, it's possible to install a BIOS update from a USB drive. First, use another computer to download the BIOS update from Dell's website onto.
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In the open window, select the BIOS flash executable file that you copied to the USB drive. For example, E5450A14.exe. The file name varies (Figure 4). Figure 4: Selecting the BIOS flash in the menu. Click OK (Figure 5). Figure 5: After the BIOS flash file is selected, click the OK button. Click Begin Flash Update (Figure 6).. You should now have two files in the folder where the Dell bios update exe was one simply named the same as the bios update and an HDR extension (This is the original bios update in HDR format) and one with _SLIC.hdr (This is your updated file).. I hope this short/sloppy guide helps other people when dealing with Dell bios and trying to.