This has to really come as a download link with official versioning from a DJI server despite there refusal at your first request. I would suggest you press them hard for this. It is their responsibility. To release the SDK and not have a hook in the firmware or whatever as a requirement for SDK apps to work is ludicrously nonsensical.
@auto flight logic, sorry but it's not enough to say, this firmware works for us so it's ok for you to. As firmware is something major and we all know by experience how one thing gets fixed but breaks something else in this area, coupled with a new flight control app in the mix is a recipe for disaster, not just for those who still choose to beta test this for you but also for your company.
This looks like a fabulous app, but the SDK enabled firmware is DJI product and must IMO come from them.