The F-35 Joint Program Office on May 9 announced that development of the Block 3i software for the F-35A has been completed.
By US Air Force (151030-F-AF000-001.jpg) [Public domain], via Wikimedia Commons
More than 100 flight hours have been clocked since May 1 using the latest iteration of the Block 3i software.
Starting this week, the JPO will begin to upgrade the F-35 fleet (LRIP 6, 7, and 8 aircraft) with the new code.
Fixes have also been incorporated into a new version of Block 2B software and this will be uploaded to LRIP 2-5 aircraft by the end of May.