Archos 504 Firmware 1.4.03

Firmware is another name for Operating System (OS) or System Software. Below, you will find the instructions and the latest software to update your specific ARCHOS device.
Step 1. Download the firmware to your computer
When you download this, your browser may warn you that the file could be harmful. This is normal because browsers are not familiar with files that have a .AOS extension and suspect that they could be malicious. These files are not harmful to your computer.
Step 2. Turn on your ARCHOS device and connect it to your computer with the USB cable
Step 3. Wait a few seconds for device detection
If your computer has correctly recognized your ARCHOS device, you will see it listed under Windows® Explorer (or Mac Desktop) as a "device" or "hard drive". If you have problems, check your User Guide for specific instructions on connecting your ARCHOS product to your computer.
Step 4. Copy and paste the downloaded firmware (.AOS file) to your ARCHOS device.
A) If the Archos device in Windows Explorer is shown as a "Hard Drive" , such as ( E: for example ) put the update file directly onto the ARCHOS icon.
B) If the Archos device in Windows Explorer is shown as a "Portable Media Device" then you need to paste the update file into the first DATA folder.
Step 5. Disconnect the Device
In "Hard Drive" mode , use the "safe disconnect" green arrow icon in the system tray before unplugging the USB cable. In "Windows Device" mode , simply unplug the USB cable.
Step 6. Plug the adapter/charger into your ARCHOS device
Step 7. On your ARCHOS device, click on "Update Firmware"
From the main ARCHOS menu, click on "setup" or "settings", then click on the "System" icon, and finally highlight and click on the "Update Firmware" button.