It says plainly on the controller to make sure the battery is full enough to complete the update. It also says not to turn the drone off during an update. You should never try an update with a low battery. What you have now is probably a doorstop.
A short video i took today of a couple of planes that have been parked in a garden close to my home town for many years, high walls and trees surround the garden so i was a bit limited in how low i could go.
XM172 first flew on 10th October...
MAS props are much stiffer, more brittle, and therefore more fragile, and will shred upon impact, rather than bend, like the softer OEM DJI props. That means you'll be less likely to be able to recover from an impact with a tree branch, and still...