I bought a Linsay F7UHD. Set it up with some info (nothing important) and let it sit until the battery drained down. I plugged it in and it said SAFE MODE and Airplane Mode. And requested a password. I got rid of the SAFE MODE but it keeps saying I have the wrong password. And I can't get out of Airplane mode. I tried holding down the reset button on back for 20 seconds, but the same home screen came back saying Airplane mode in the upper left corner and if I swipe up I get the keyboard and the password reset. Any advice would be greatly appreciated.