GO4 app 4.3.4 was released for the CS models. iOS app is usually out the gates first.
True, IOS often first, then Android & CS... I use all 3 depending on needs. But my point was 4.3.4 was released prior to Updated TB50/55 Battery FW, not directly associated. Just a note for others to be aware, that the battery FW will apply even if they don't see a Go4 app update performed. Personally I find it more stable for multiple battery set updates to use DJI Asst 2, the Go4 App (IOS or Android) often over looks battery swaps and fails to prompt until next initial app start... not consistent but happens, where the DJI Asst 2 is consistent by hitting the refresh.