Those having problems with the upgrade check the manufacturing date of your mavic:
DJI Mavic Pro Serial Number Decoder
We might see a pattern showing us that a certain manufacturing date range causes trouble indicating there might be some hardware revision with problems.
Mine was manufactured on February 28th 2017 and never had any problems. Upgrades go smooth, it flies well.
Adding the manufacturing date to your signature might also be a good idea so others can see when eventual trouble drones were built.