Herelink air unit not updating

Hi all
I have updated my Herelink V1 controller to the latest firmware update with no issues. I went into herelink settings app and downloaded the latest firmware for the Air Unit and then transfer it to the Air unit. When updating the air unit it always goes to 9% pauses and i see 100% Done but i still see the old version on the air unit. Any fix to this?
Andrew

please see