96270A/96040 Firmware Update (.exe)
Documents:
96xxx Firmware Release Notes (.doc)
96xxx Firmware Upgrade Instructions (.pdf)
96270A/96040A RF Reference Source Firmware Upgrade
Download instructions and a list of firmware revision history, new features and resolved issues for the upgrade versions are documented at the link above. You will be asked to complete a brief product registration form before going to the download page for the first time. You will be asked to complete the form even if you have previously registered your 96270A/96040A.