Originally Posted by douglassmt
What did they upgrade? I have the same unit as yours and the last update I heard Bill talk about was to turn it into a dual band receiver so we could receive both UAT and 1090ES. Is that what you had upgraded?
No, the 1090ES upgrade isn't available yet.
There are multiple internal board upgrades available depending on your serial number. It would nice if Bill would document these board revisions, but he's chosen to keep that information secret. If you have a pre-828, you get both a card upgrade and a board upgrade. Post 828 is a board upgrade.. I believe he prepends a 9 in front of the serial number to show that the board upgrade has taken place.
I've had to send mine back twice over the years for hardware upgrades. At least he doesn't charge for these upgrades except for shipping.