This bootflash EPROM is for updating the sound OS to version 8 in Whitestar games from Lord of the Rings to before Nascar. Stern update bulletin. You only need this update if your game is having sound issues.
Link to the Stern Bulletin: http://www.sternpinball.com/upload/downloads/sb157.pdf
The Sound CPU Update Process
LotR shipped with version 3 of the sound operating system. You need to update it to version 8. To do this, you need a Bootflash ROM. This is a special ROM that can update the sound OS in the sound processor.
1) CAREFULLY remove original sound chip U7. This is an EPROM.
2) Replace it with the Bootflash 8 EPROM (checksum $8F2E)
3) Move jumpers J2, J3, J4 to the opposite positions.
4) Turn machine on. Wait until LED1 goes to continuous flashing, less than 5 mins.
5) Turn machine off.
6) Put J2, J3, J4 back where they were.
7) Repace U7 with your original sound chip.