: When these systems became obsolete, thousands ended up on the secondary market. Hobbyists would find these boards, see the only legible text— BTI ML2-94V0

: Clearly indicates that this is a BIOS binary file.

The keyword "bti ml2 94v0 bios bin hot" represents a specific, high-stakes repair scenario. The "94V0" tells you the board is physically tough, but the "hot" tells you the repair requires technical courage.