Proxmox VE

How to Update BIOS/UEFI Firmware - Complete Guide

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How to Update BIOS/UEFI Firmware - Complete Guide

Question: How do I update VM BIOS firmware?

Answer: Virtual firmware updates

How to Check BIOS Version

View Current Version

# Check BIOS
qm config 100 | grep bios
 
# OVMF version
qm list 100

How to Update OVMF

Step 1: Update Proxmox

# Update packages (includes OVMF)
apt update && apt upgrade -y

Step 2: Revert OVMF (if needed)

# Use specific version
# OVMF is part of ovmf package
apt install ovmf=4.2~beta1-2

How to Customize BIOS

Custom VBIOS

# Add custom video BIOS
qm set 100 --hostpci0 01:00,pcie=1,romfile=/path/to/vgabios.bin

How to Reset BIOS Settings

Reset to Default

# Don't work directly
# Recreate VM if issues persist
qm destroy 100
qm create 100 --bios ovmf

How to Backup BIOS Settings

Export Configuration

# Export VM config
qm config 100 > /backup/vm100-bios-config.txt

Keywords

firmware update ovmf how-to bios

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