Beomaster 5500, Firmware 2.3

Firmware programming of version 2.3 for Bang & Olufsen Beomaster 5500. This product consists of programming the firmware, the EPROM circuit and, test in a Beomaster 6500. We may reuse erased EPROMs. The EPROM is located on the CPU board in the Beomaster behind a metal shield. We can also supply other versions on special request.

The new EPROM has a small mark on one side which must be turned in the same way as the old EPROM.