The latest versions of SiTechExe: Note this is maintained by Don W http://siderealtechnology.com/SiTechSetup095G.exe http://siderealtechnology.com/SiTechExe095H.zip http://siderealtechnology.com/SiTechSetup095P.exe http://siderealtechnology.com/SiTechExe095S.zip http://siderealtechnology.com/SiTechExe095T.zip http://siderealtechnology.com/SiTechSetup095U.exe http://siderealtechnology.com/SiTechExe095V.zip http://siderealtechnology.com/SiTechSetup095X.exe ****************************************** The latest versions of Firmware: http://siderealtechnology.com/V39.BIN http://siderealtechnology.com/V50.BIN (see note below) http://siderealtechnology.com/V97.BIN Note: The design (chips) of Servo 1 has changed, starting with serial number 57200. These controllers were first sold in October 2021. They require the V50.BIN Firmware. V50.BIN will not work in earlier controllers - use V39.BIN for them. The new chips in Servo 1-v2 are in short supply (backordered) maybe until Oct 2022. ******************************************** Setup Manual 2008 http://www.siderealtechnology.com/SetupManual.pdf Operations Manual 2008 http://www.siderealtechnology.com/OperationsManual.pdf Quick Start Equatorial Mounts http://www.siderealtechnology.com/QuickStartSiTechEQUOperations.pdf Quick Start Alt-Az http://www.siderealtechnology.com/QuickStartSiTechAltAzOperations.pdf