Phantom/Spark Update Help

[EvPa]

For reference airplay silver units serials end with EW08 or later.  Any silver with EW02 is Bluetooth but no airplay

And don't forget the earliest ZigBee ones without Bluetooth like my two Silver from early 2015.
Still pondering if I'm going to upgrade them...

Are you sure they're upgradable? As I understand the earliest version isn't DOS2 compatible.

Oh, sorry if I wasn't clear.

They're not compatible with DOS2, the upgrade I mentionned is the current offer where you trade your old Phantoms for the latest model (and cash, obviously).