So in this case, if you are running iOS use the IPA file from this comment FCC mode on Mavic 2 Pro possible?
Ho to sign IPA files is here
https://mavicpilots.com/threads/fcc-mode-on-mavic-2-pro-possible.47108/page-23#post-935073
You can find here the newest. version of DJI GO 4 Mod for iOS...