An ALPHA sign has a small computer inside which is used to operate the sign.

Firmware is the operating system for this sign's computer.

It is usually stored on a computer chip (called an EPROM) located inside a sign.

From time to time, firmware is changed to improve a sign's performance.

When this happens, the firmware version is updated and noted on the Current Firmware List page.

If you would like to upgrade your sign's firmware, use the Feedback Form and request a firmware upgrade in the Problem Description.
 

 How Do I Find the Firmware Version of My Sign?