Software Update History

This page provides an overview of the changes to our software.

Go to Software Downloads

Product Version Release Date Updates Downloads
Celestron Firmware Manager (CFM) 2.3.4104 Support for Gen_3.5 WiFi Accessory. Same radio as Gen 3, but replacement CPU. Download
Official support for Origin Mount and Origin Focuser.
2.9.3200 Official support for legacy mounts (SLT, CGE, CgePro, CPC, SE, more)
Bug Fix: HC's that were not updated, were inappropriately identified as programming failed.
2.9.3170 Official support for SSAG.
2.9.3150 Dew Heater
Updating devices connected to PC first before updating devices found through the aux bus.
BugFix: Green checkmark not working
NexStar+ not reset when programming completed
2.9.2222 Support for new .cfm file formats, required by supply-chain crisis.
Known bug: old files mis-identified as corrupt, instead of just "old".
2.9.1090 Support for Java 8!
Bug fix: Not installing boot loader first on SS_HC
2.7.9144 August-2019 Bug fix: Wifi Bridge
Dialog boxes showing when connection is restarting
2.7.9100 June-2019 Support for Focus motor
Bug Fix: Wifi Bridge
Bug Fix: CGX(L) USB port programming.
BugFix: Not all firmware files downloaded on slow internet connections
Bug Fix: AstroFi/Evolution programming through WiFi
Internal refactoring
2.3.7111 June-2018 Full Support of CGX and CGX-L (including remote sensor boards.
Bug Fix: clicking the "download button on UI crashed application.
2.7.7070 May-2018 Support for SkyWatcher StarSense Interface box
CGX and CGX-L moutn support
Bug Fix: package delays in serial packets exceeding 200ms cause problems.
Astro Fi support.
Celestron Focuser Utility 1.0.0 December-2018 Initial release Download
CPWI 2.5.6 July 2024 Bug fix: Cordwrap misbehaving for alt-az mounts on a wedge Download
Feature: Support for direct connect passwords (requires Gen 3 WiFi module)
Bug fix: Fixed UI bugs across the application.
2.5.5 January 2024 Support for SSAG dithering
Bug fix: PEC was being disabled on Sync
Bug fix: SSAG slow run-away slew after goto
Bug fix: Celestial equator wasn't appearing on planetarium
Bug fix: Application crash upon using planetarium before connecting to mount.
Feature: Planetarium view now correctly reflects park status sent through ASCOM driver.
Feature: Ascom support for go to local {Azimuth, Altitude} coordinates
Enhancement: update labels for the dew heater current limit
2.5.2 July 2023 Bug fix: Crash during StarSense Auto-align
2.5.1 July 2023 Bug fix: When SSAG was sconnected, prevent lock up when tracking enabled.
2.5.0 July 2023 Initial SSAG support
Initial SSAG support
2.4.3 February-2023
  • Add setting allowing accessories to be ignored during device discovery.
  • Add setting allowing specified COM ports to be ignored during device discovery.
  • Add setting allowing support for multiple connections to be enabled or disabled.
  • Add setting allowing detailed logging to be enabled or disabled.
  • Add dynamic status message to top bar of main window.
  • Show a warning if the focuser is uncalibrated after connecting to it.
  • Add ability to show the celestial equator to SkyViewer.
  • Update UI for PEC Playback settings to improve clarity.
  • Consolidate Mount USB and Hand Controller connection methods.
  • Add support for communicating over daisy-chained PC port connections.
  • Allow mounts without ST-4 ports to set and save Guide rates in the mount configuration dialog.
  • Setting guide rates from the ASCOM driver are now seen in the CPWI mount config dialog and the mounts ST-4 setting.
  • Reading guide rates from the ASCOM driver reflects the value in CPWI's mount configuration dialog.
  • Add WifiState to CPWI.
    • cfg. On connection will set state of mount's onboard WiFi module. valid values : Ignore Enable Disable
  • Attempt to connect to last used COM port before trying others.
  • Reflect custom port names in Dew Heater data output.
  • Bug fix: Park did not always complete.
  • Bug fix: Google Maps location selection does not work.
  • Bug fix: Focuser complains incorrectly that it is uncalibrated .
  • Bug Fix: WiFi connections locking up or not connecting.
  • Bug fix: Some evolution mounts are not being detected during WiFi connection process .
  • Bug fix: Text in selectable labels overflows during mouse hover.
  • Bug fix: ASCOM driver reduced verbosity of the logs.
  • Bug fix: ASCOM driver will now deliver the mount to the previously specified park position before parking the mount.
  • Bug Fix: ASCOM driver AbortSlew will now clear the IsSlewing flag.
  • Bug Fix: The 'Begin' button was not always visible in the PEC Training dialog box.
  • Bug Fix: PEC training never completed even though progress bar reached 100%.
  • Bug fix: Dew Heater Save Data switch not working.
  • Bug fix: Typographical errors.
2.4.2 Bug Fix: sidereal tracking too fast
Bug Fix: sidereal tracking too fast
Bug fix: gamepad and ASCOM N-E slew not working
Bug Fix: should not request write access to C:\
2.4.1 January-2022 Bug Fix: CPWI not always connecting to mount
2.4.0 January-2022 Updated user interface design.
Added support for Dew Heater and Power control box accessory.
2.3.5 August-2020 Hotkeys feature overhauled
Added deadzone setting to Gamepad configuration
Reconfigured speed ranges on Gamepad configuration
Feature added to goto a specfic RA/Dec location
Updated the manual
Corrected behavior of ASCOM_Telescope.SideOfPier()
Added fix for ASCOM guiding on mounts with old firmware (less than 6.18)
Added ASCOM.Action(Telescope:AddAlignmentReference,ra:dec)
Revised PEC dialogs to make them more clear
Slew rates for the mount and focuser persist when the dialog is hidden/closed
Bug fixes
2.3.4 April-2020 Removes false disconnection issues
UI changes including support for red filter.
Enhanced focuser support (ASCOM + gamepad + control dialog)
Added Hot Key dialog with new hot keys
GPS Accessory
Added UI support for Sync
PEC enchancements
Added 3 Messier Objects to the off line catalog (M25, M40, M45)
Trial support for CGE, Advanced GT, and most GT mounts)
Numerous bug fixes
Known issue: ASCOM pulse guiding not working with MC firmware 6.12 - 6.17.
Known issue: ASCOM pulse guiding not working with MC firmware 5.00 - 5.17
Known issue: ASCOM SideOfPier() returns ASCOM SideOfPier(current position)
2.2.4 January-2020 Bug fix: StarSense is less likely to make a false plate solve
Database Corrections: Triangulum galaxy, Rosette Nebula
2.2.3 September-2019 Feature: New StarSense user-auto-align generator tool
Feature: Ability to set solar and lunar tracking rates, as well as enable Ra+Dec tracking for GEM mounts
Feature: Joystick/Gamepad support for mount movement control
Feature: Meridian sweep support added
Feature: Slew limits for alt-az mounts
Feature: Battery monitoring for mounts with batteries
Bug Fix: Issues with StarSense communication resolved
Bug Fix: CPU power consumption decreased substantially
Bug Fix: ASCOM related bug fixes
2.1.25 April-2019 Feature: Complete UI revamp
Feature: StarSense support added
Feature: AllStar Polar Alignment added
Feature: Mount configuration options added
Feature: WiFi support added
Feature: Support for all current computerized telescopes added
Feature: Support for HC connection
1.0.3 June-2018 Small UI updates
1.0.0 January-2018 Initial release (CGX and CGXL support only)
USB ASCOM Driver for Focuser 1.5.0 December-2019 Corrected bug causing frequent drop outs. Download
Removed "backlash" features from main UI
1.3.0 March-2019 Bug Fix
1.2.0 January-2019 Initial release
PecTool 1.0.18 July-2015 updated instller to support Windows 7/8 Download