I live in the boondocks, no high speed internet. We still have the old copper phone lines. We are served by a local company called windstream. They stink! Download speeds are 500kb that is one half of a megabite. That being said I cannot download and update via wifi or dji assistant 2 the battery on the mavic will run down before the file downloads. Can I update using my cell data? Connect the phone, controller and drone together and update through dji go4 using the cellular connection? Thanks for any help you can provide.