You can see a summary of firmware changes in the Release Notes (in the Supporting Documentation section).

Keysight provides regular updates to our InfiniiVision X-Series oscilloscope firmware to provide new features, incorporate customer suggestions, and ensure proper functionality.  You must update your firmware when enabling new features.

To see your oscilloscope's current firmware version, press the front panel [Help] key; then press the About Oscilloscope softkey.

Release Date Version Version Description
2021-11-12 7.50.20211028 This is the firmware for the 4000 X-Series oscilloscopes.
Release Date Version
2021-11-12 7.50.20211028
Version Description
This is the firmware for the 4000 X-Series oscilloscopes.

How to Download

  • Click the download button and save the file to a USB flash drive or to a temporary directory on your computer.

  • NOTE: If your oscilloscope’s software version is prior to 4.00, you will need to change the suffix of the upgrade file from .ksx to .agx.

How to Install

  • To update your oscilloscope's firmware, do one of the following:

    • Place the file on a USB flash drive, connect it to the oscilloscope, press [Utility] > File Explorer, select the file; then, press Load File.
    • If your oscilloscope is on the network: you can place the file on your computer, access the oscilloscope's Web Interface (see the User's Guide for details), click Instrument Utilities, select Firmware Version, browse to select the file; then, click Install.
  • After your oscilloscope's firmware is updated, check the calibration status: press [Utility] > Service > User Cal Status. If "Results: OK" is displayed, you do not need to recalibrate. If calibration is required, press the Start User Cal softkey.


  • Does Not Require a License

Installs on: Instrument


  • NOTE: When upgrading your oscilloscope, download the .ksx file, and load the complete file into the oscilloscope. Do not “unzip” the file.

Supported Instruments

  • DSOX4022A, DSOX4024A, DSOX4032A, DSOX4034A, DSOX4052A, DSOX4054A, DSOX4104A, DSOX4154A, MSOX4022A, MSOX4024A, MSOX4032A, MSOX4034A, MSOX4052A, MSOX4054A, MSOX4104A, MSOX4154A
No previous versions available