Originally Posted by bui cuong
you don't have to check anything else again. because i'm sure that your mobile got hard error. the flash and CPU chip have not been fixed with the mainboard of your mobile. you should go to get it repaired. don't try to do with the OS software, it's not useful.
This is an amazing first post.... not sure where you were going with it but I am sure the intent was good!
Anyway, welcome to the forum and you may wish to sit back and read some posts before advising others as you don't want them going down a path they will most likely regret.