First of all, flashing bios in one leap from 2.4 to 2.15 is not great idea. Try small incremental flash 2.4 to 2.5 and so on. Big leap can cause failed flash.
second, use dell method to prepare a bootable usb, then copy all the bios.exe you need on it.
Third flash bios only when it is absolutely necessary because it is intrinsically risky. Do it at your own risk.
redxps630
9 Legend
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15.4K Posts
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November 28th, 2022 17:00
First of all, flashing bios in one leap from 2.4 to 2.15 is not great idea. Try small incremental flash 2.4 to 2.5 and so on. Big leap can cause failed flash.
second, use dell method to prepare a bootable usb, then copy all the bios.exe you need on it.
Third flash bios only when it is absolutely necessary because it is intrinsically risky. Do it at your own risk.