Some more info on the state of the software from someone that knows but is not directly tied to LM.
DoD Director of Operational Test and Evaluation, J. Michael Gilmore,
F-35 Software: DoD's Chief Tester Not Impressed - IEEE Spectrum
In his report, Gilmore states that in regards to operational suitability, the F-35 currently “demonstrates [a] lack of maturity… as a system in developmental testing and as a fielded system at the training center.” While Gilmore’s report details a host of other engineering-related issues as well, software remains a major area of concern.
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“The program made virtually no progress," Gilmore’s report says, "in the development, integration, and laboratory testing of any software beyond 2B.” In other words, forget about having a fully combat capable F-35 any time soon.
Gilmore points out that because of the concurrence of F-35 production and its testing, a practice that the DoD acquisition leadership admits was “acquisition malpractice,” the tide is not likely to turn in the software battle anytime soon. “Simultaneous development of new capabilities, associated with the next blocks of software, competes with the flight test resources needed to deliver the scheduled capability for the next lot of production aircraft,” Gilmore writes.
The problems extend beyond the plane itself. Gilmore also notes that software issues with its helmet continue. “Boresight alignment between the helmet and the aircraft is not consistent between aircraft and requires calibration for each pilot,” as do issues with the aircraft's Autonomic Logistics and Information System (ALIS), which the report states “Is immature and behind schedule.” Bogdan has said that without a functional ALIS, “the “airplane doesn’t work.”
Of course, the F-35’s program management knows of all the problems that Gilmore’s report highlights (and probably many more). It's only the Congress, the U.S. taxpayer, and the taxpayers of nine other countries who are helping underwrite the program who may not. Perhaps that's why the DoD felt free to buy two more lots of F-35s at a cost of $3.8 billion and $4.9 billion respectively last month. After all, these are seen as being just “normal teething problems" for an aircraft that has so much impressive combat capability, at least in the simulator.