The firmware is the operating system. As any computer system, it is periodically updated. We strongly suggest you update yours as soon as the latest one is released.
Download Archos 50 Platinum OS v 20130726.213944
How to install a firmware.
Download the restore software.
Use our software if you need to restore your device to factory settings either because it froze on the boot screen or doesn't start. This operation will delete all data and content on your device.