If you have not downloaded firmware before, please read the various notes below. If you are familiar with downloading firmware files, then just use the links below. Please save the file to disk before attempting to install it! New firmware releases typically occur in 3-6 month intervals. The dates shown for each firmware revision are the compile dates; not the actual release dates, which may be much later.

  

Currently Available FieldFox Firmware
 FieldFox Model Numbers Latest Releases Notes 
  • N9950A/51A/52A microwave analyzer models
  • N9960A/61A/62A microwave SA models
  • N9913A/14A/15A/16A/17A/18A RF and microwave analyzer models
  • N9925A/26A/27A/28A microwave VNA models
  • N9935A/36A/37A/38A microwave SA models
  • N9912A  RF analyzer model
  • N9923A  RF VNA model
  • B Models

A.13.10-3 All FieldFox models

(30 Aug 2024)

Click HERE to firmware download page.

Firmware History Changes

Firmware update instructions

For analyzers with CPU2. Check CPU by pressing: [System] {Service Diagnostics} {System Information} Bios Rev will state CPU2, or CPU=2
  • N9913A/14A/15A/16A/17A/18A RF and microwave analyzer models
  • N9925A/26A/27A/28A microwave VNA models
  • N9935A/36A/37A/38A microwave SA models
  • N9912A  RF analyzer model
  • N9923A  RF VNA model

A.08.19
(01 Feb 2019)

Click HERE to firmware download page.

Firmware History Changes

N991xA/N992xA/N993xA firmware update instructions (to/within A.07.xx or A.08.xx)

For analyzers with an older CPU. Check CPU by pressing: [System] {Service Diagnostics} {System Information}. Bios Rev will say 2.4x (no mention of CPU)

Note: Updating of firmware will not invalidate or otherwise affect your annual instrument calibration.