If you have any questions regarding changes in the application or other problems related to it, please contact our support and support at help@lpgtech.pl. You can find a list of major changes below:

Version Important changes Added:

    • New firmware, version 92 for TECH DUO. Changes made:
      • Enabled RPM divider for RPM taken from PB Injectors;
      • Improved fuel switching for mixed mode.
    • New firmware, version 1.12 for RGB Switch. Changes made:
      • Improved touch sensing.
    • Added OBD parameters to gauge list;
    • Added gauge position saving;
    • In the correction table, holding of ‘Shift’ button, sets change rate from +/-1 to +/-5;


    • General fixes and improvements;
    • Improved editing of corrections and multipliers in “Map” tab;
    • Improved support for LPG controllers with OBD. Added:

    • Added version 0.1 of firmware for older digital switch.


    • Improved connectivity with LPG controller
    • Improved the adjusting of the corrections (“Map” tab)
    • Fixed reported issues concerning calibration
    • Fixed displaying of some settings (“OBD” tab) Added:

    • Firmware files for RGB Switch


    • New firmware file for RGB Switch (version 1.8): Improved touch sensing at low temperatures;

Attention! Due to changes caused by uploading previous version of firmware for RGB Switch, that introduced unstable operation at low temperatures, it is recomended to upgrade the firmware in RGB Switch to the newest version available. Added:

    • New menu items Connection: “refresh port list” and “BlueTooth” -> “New device …”.
    • Automatic authentication of wireless BlueTooth interfaces (“Automatically authenticate BlueTooth interface” option).
    • Firmware files (version 68) for controllers with built-in OBD functions.
    • “Car parameters” option for uploading controller settings.


    • General fixes and improvements. Added TECH ONE, TECH DUO firmware, version 91:

    • Fixed the acceleration options.


    • Improved connection with digital switch and the controller.
    • Fixed problem related to changing controller settings and improved value editing;
    • Improved readability of the text on the “Settings” tab;
    • Small bugs fixed. TECH 204 firmware, version 67:

    • Added support for digital switch.

RGB switch firmware, version 0.1.3:

    • Prepared to work with TECH 204.</li
    • Other improvements.


    • Support for digital switch for TECH 204.


    • Improved communication with digital switch.
    • Other bugs fixed. Added:

    • TECH ONE firmware upload bug fixed.
    • Switch control panel firmware upload bug fixed (noticed in version). Added:

    • Small bugs fixed.
    • Added new firmware for TECH ONE, TECH DUO and switch control panel RGB.
    • Brightness, volume and sound type selection added for digital switch control panel.
    • Procedure of digital switch control panel firmware upload changed.
    • TECH DUO password lock feature added. Added:

    • Gas level sensors 90 Ohm i 50 kOhm default settings changed.
    • Gas level indication bug fixed for 90 Ohm sensor in TECH ONE and TECH DUO.
    • Gas level sensor levels adjusting alghoritm and window view optimized.
    • Default colors on RGB switch control panel optimized.
    • „Full screen” feature added in „View” tab Added:

    • Updated TECH DUO firmware.
    • Small bugs fixed. Added:

    • Updated TECH DUO firmware.
    • Translations optimized. Added:

    • Added new version of firmware – 66.
    • „Delete all DTC’s” function added in automatic OBD errors deleting.
    • Lithuanian language added.


  • Small bugs fixed.
  • Switch control panel RGB configure window optimized.
  • Switch control panel settings moved to „Gas level sensor” settings window.
  • „Gas level sensor” window resolution optimized.
  • Switch control panel icon optimized.
  • TECH ONE firmware upload optimized.
  • „Nozzle calculator” algoritm and window view optimized.
  • „Last refuelling chart” and gas level sensor supply features added (TECH DUO).
  • Corrections import bug fixed (TECH DUO). Added:

    • TECH DUO support added.
    • „Nozzle calculator” added („Tools” tab).


  • „Table” viewset as default while opening „Map” tab.
  • „Units” and „Colouring” menu moved to „View” tab.
  • Firmware selection bug fixed.
  • Real parameters window size optimized.
  • „Normal” to „Standard” name change in „Firmware” selection Added:

    • TECHConnect support added.
    • Switch control panel RGB support added.
    • Portuguese, Romanian and Italian languages added.
    • Added special TECH ONE firmware version –200. TECH ONE now works as a signal generator for injectors cleaning machine.

TECH ONE firmware – 88:

    • Shortened delay between electrovalve opening and switching over to gas.
    • Max. gas pressure no longer available on CNG mode.

2xx, 3xx, 5xx series firmware – 65:

    • Max gas RPM lowest value set to 0.
    • Max engine load on gas lowest value set to 0.
    • „Fast switch off” function optimized. Do not use in engines with wide opened petrol injectors strategy.
    • Small bugs from beta versions fixed.
    • „No connection with OBD scanner” bug fixed.
    • „Injector selection from icon” bug fixed.


    • List of available firmwares optimized (old files deleted).
    • Communication ports selection optimized.
    • Wider application window restored