REMEMBER - playing with firmware and uploading new unofficial FirmWare is always at your own complete risk !!!!
If you are not able to use standard upload,go: 1 unplug 2 push reset button and hold it 3 plug back power  4 release reset after 10sec 
5 use restore (left side chinese letters) and 6 upload new firmware 7 do not turn power of !!!! do not touch it at lease 4 minuts and wait for next screens

and REMEMBER - if you manage to kill device by loading wrong firmware or loosing power in process of flashing or any amateur manipulation, you loose all warranty whatsoever


 for fw check go to:
 
 http://www.aturnofthenut.com/upload/
 
 https://www.ofmodemsandmen.com/firmware16.html
 
 
 read and search around this site:
 
 https://ltehacks.com/viewtopic.php?t=18#p42
 
 Your 524wifi team