If you did the procedure and observed the loading bar advancing on the screen and the device did not respond, the formatter is affected (main card of the device), if you are not a technician you can not continue with other procedures, I suggest you take it to assistance technical and verify the warranty time, you can not load a new firmware if the device is unstable since you would not have a good result, I await your comment, best regards
Dear, appreciate the answers, you are new to the forum and if you do not have that detail there will be no technicians who have motivation to provide other solutions, best regards