I also had a horrendous experience with Autel after dropping thousands on their engineered obsolescence and suggesting them to many people. I won't ever make that mistake again. I've only flown my Evo 1 a grand total 4 times, never crashed, well maintained, even bought a waterproof hard case for it. It appears either they sourced defective NAND chips on the mainboard and thought, it's an acceptable failure period because they'll be EOL before it happens, or they've intentionally bricked these drones. I don't know which one it is, but after losing thousands on an Autel branded paperweight, and seeing so many have the same mysterious issue with no word from Autel nor attempts to make it right, I'm not inclined to give them the benefit of the doubt.