Just got an Lightbridge 2 and A3 for my X8. The RC is on 1.1.3 I think thats right any it said it needed update to 1.1.7 I think anyway it downloaded no problem than I hit the update it starts but goes nowhere than say update failed, try several time with no joy. Any ideas on what to try.

Could you please provide a screenshot of the update message?
Have you tried to update the RC to 1.3.0 via usb flash disk?

To clarify, are both the LB2 air end and the A3 fully updated? What mobile device are you using to update the firmware on the LB2 ground unit? Please try reinstalling the Go app and reattempt the firmware update.

Please be advised that the section that you posted in is the Inspire specific section of the forum. If the issue persists, please post the in the Pro System section of the DJI Forum and I can continue to assist from there along with other members that may have the same set up.