Dell does not cache the files for bios recovery (which I think they will patch it soon). I found this after several trials and I am sure it works for now. You may be able to do this with one Drive if you have another computer on the side (I did not try that). Wait until firmware updates and congratulation my friend you successfully downgraded the bios. Now shut off the laptop, put flash drive 1 in the left USB port, hold SHEFT+ESC and press power button and wait for 2-5 second then release.Then rename the hdr file to "BIOS_IMG.rcv" and has it ready on drive 2. Now download the 1.8 bios exe file, rename it to "BIOS_IMG.exe" and export the hdr file using command as administrator (Command like is ="BIOS_IMG.exe/writehdrfile"). Rename it to "BIOS_IMG.rcv" and put it on flash drive 1. From Dell web site download latest bios file in "rcv" format, (they offer that choice for latest version only).Prepare 2 flash drives, format them to FAT32 with same name.I list what I did here and hopefully that will work with you and some others before our Dell Care friends block it (they seem pretty busy with blocking bios downgrade, But no fx light fix!)Īnyway, I will make the steps as clear as possible for others to follow: Successfully downgraded my bios in a hope to get my fx light to work but I failed.
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