By now it should be clear to everyone that Yuneec is no longer supporting the Typhoon H with firmware updates.
From messages on this board they are also apparently no longer supporting firmware updates for the 520.
It appears Yuneec's marketing strategy is to sell and support a drone model for a year or two, then stop supporting it in the hope that the mark (the customer) will buy a later model at an exorbitant markup.
When this becomes widely known by potential buyers, no one will be buying Yuneec drones and owners of yuneec drones will find there's no buyers to take then off their hands.
From messages on this board they are also apparently no longer supporting firmware updates for the 520.
It appears Yuneec's marketing strategy is to sell and support a drone model for a year or two, then stop supporting it in the hope that the mark (the customer) will buy a later model at an exorbitant markup.
When this becomes widely known by potential buyers, no one will be buying Yuneec drones and owners of yuneec drones will find there's no buyers to take then off their hands.