Bios Mods -The Best BIOS Update and Modification Source

A03 was unlocked, Dell locked the advanced settings in A04 but also fixed an important stability issue so the update is needed...

A04 change log
"
1. Enhance setup functions for security mechanism and ease use
2. Improve audio adjust
3. Improve QFE power consumption for fitting Microsoft's specification
4. Enhance diagnostics utility for touch function
5. Upgrade embedded controller firmware version for system will shut down when wake up from connected standby on low battery level
"
http://downloads.dell.com/FOLDER01826468M/1/5830A03.EXE
BIOS: AMI UEFI
Version: A03

http://downloads.dell.com/FOLDER01887573M/1/5830A04.EXE
BIOS: AMI UEFI
Version: A04
Size: 6144 KB

Use switch /writeromfile to extract the rom file.

or

Here is the rom file zipped in the Attached File(s).