Originally Posted by gektor
I agree that a Backup is always a good Idea and of course you can restore your Filesystem easyly
But if the described Issue happens to you out in the Field, you won't be able to turn on your corrupted Transmitter and fly your RC even if you have new Batteries.
I believe, that this is an Issue which can be solved by adding an early alarm and by programming the Firmware not to save anything when the Battery runs below a certain Voltage.
That is a good suggestion. Because we use a filesystem, we can't incrementally update the file in a safe way. this means that if the voltage is not enough for programming the flash, you get the behavior you are seeing now.
I am not sure what an appropriate voltage is. Maybe around 4V for the Devo8?