The TCF-S line of focusers have been discontinued but we still offer firmware update chips. The chips are installed in a socket inside the TCF-S / TCF-S3 control box or on the TCF-Si / TCF-S3i circuit board.
This replacement firmware microprocessor chip is easily replaced. Consult the instruction guide for replacement details.
- TCF-S Focusers with revision 4 - specify firmware v2.40
- TCF-S Focuser Revision 5control boards - specify firmware v4.12
- TCF-Si / TCF-S3i Focusers - specify firmware v3.12