How do I update the BIOS in an Elo E-Series 3 AIO touchcomputer?

How to Perform a BIOS Update (EFI Shell, Windows, and USB Methods)

This article provides step-by-step instructions for updating the system BIOS and ME firmware using EFI Shell, Windows, or a bootable USB flash drive.

⚠️ Important:
Do not interrupt power during the BIOS update process. Doing so may permanently damage the system.

Secure Boot must be disabled before using EFI-based methods.

Pre-Update Checklist

Confirm the correct BIOS package for the exact model.
Connect system to reliable AC power.
Disconnect unnecessary peripherals.
Record current BIOS version.
Ensure no pending OS updates (Windows method).

Download Latest Firmware

⬇️ Download:
The latest BIOS and firmware packages for E-Series systems are available below.

Download E-Series Firmware

⚠️ Important:
Always verify the firmware matches your exact hardware model before proceeding.

Method 1: BIOS Update via EFI Shell

Obtain the BIOS package.
Press Del during POST to enter BIOS.
Disable Secure Boot:
Security → Secure Boot → Disabled
Save and exit (F4).
Boot to EFI Shell.
Run:
fs0:
cd EFI
FLASH.nsh
Press Y when prompted.
System will reboot and complete the update.

Example Command Screen:

Example BIOS Update Screen:

Example ME Firmware Screen:

Method 2: BIOS Update via Windows

Open Command Prompt as Administrator.
Navigate to:
cd BIOS\WIN
Run:
FLASH.bat
Press Y when prompted.
System will reboot and complete the update.

Example Command Prompt:

Example BIOS Update Screen:

Method 3: BIOS Update via USB Flash Drive (Not recommended)

💾 Boot directly from USB to run the BIOS update without Windows.

Step 1: Prepare USB

Use a USB drive 32GB or smaller for best compatibility.
Format to FAT32.
Extract BIOS package to root.
Confirm folders: EFI, ROM, WIN

Step 2: Enable Auto-Launch (Recommended)

Create startup.nsh in USB root:

fs0:
cd EFI
FLASH.nsh

Step 3: Boot from USB

Insert USB.
Press Del → Disable Secure Boot.
Boot from USB device.

Step 4: Run Update

If auto-run is configured, update starts automatically.
If not:
fs0:
cd EFI
FLASH.nsh
Press Y when prompted.

❗ Do not remove USB or power off during update.

Post-Update Verification

Confirm BIOS version updated.
Verify OS boots normally.
Re-enable Secure Boot if needed.
Validate system functionality.

ℹ️ Multiple reboots during update are normal.

❗ Interrupting the update may permanently damage the system.

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