The Pentagon says F-35s received no new combat upgrades last year, and that attempts to replace old software have stalled.

Attempts to provide upgraded software for F-35 jets have “stagnated” and no new combat capability was delivered last year, according to the annual report by the Pentagon’s testing office, even as the ...

F-35 TR-3 software upgrades stalled in testing, delaying new combat capability and raising cybersecurity concerns.