I hope I can help with this problem because I faced this problem last week There are several ways to do this. (1) Use an app to see the Wi-Fi password (2) Show wifi password android in the root directory (Manually) I recommended using the 1st method because it's easy can get the best result. find WiFi login credentials using an app fist you need to download the WiFi Password Viewer app and follow the steps. (1) When you first time using this app will ask you Super User request. So tap on the GRANT. (2) Then, the app will show you a list of previous wifi connection that you were already connected with your android device. (3) Find your forgot wifi network and tap on it. (4) You will see the password of the selected wifi network. try these steps I think you can solve this problem. If you fail this method, try it the right way How to find Wi-Fi login credentials and for other methods.

All right, I hope I can help you. There are many ways to format your USB drive. I think you can't do this because you used the normal formatting method. I recommend that CMD do this. If you don't know this, check this out. I have used this method. I've had good results.