Hello, im having the same problem on a 3dr Solo drone that i bought brand new with the gimbal and the gopro hero4, so i suppose it has the first version of the solo firmware into, but after making several tries on opening the solo app on an android 10 phone it simply closes itself or crashes, so by reading some articles on the web i have known about the Solex and the opensolo progect and so i went to this guide
Install via Solex App , on how to install the opensolo4 software using that Solex app, then i bought it, followed the steps carefully and im stuck to the step where i checked Advanced Mode into the Solex's settings menu but no firmware updates menu appeared. Now im having no Apple pad or phones here, can someone confirm that the SidePilot app is still working on the Apple devices especially the recent ones because i have a friend that has an iphone but i think its recent not know exactly what version it is, so i can eventually use that to update the drone to the opensolo software.