well, half-problem solved.
i flashed again to the 20171011-0929 and i can make calls and fully use 4G LTE network. the imei issue wasn´t solved yet (still 111111111111 in slot 1 and 222222222222 in slot 2) because i came home to the christmas and the new year and the phone box with the imei sticker is at work. only at january 2nd i´m going to have the imei with me.
			
									
									
						


 
 

 remember to perform a factory reset after the update!
 remember to perform a factory reset after the update! ... I wont to try Flash ROM but I do not understand the instructions.... Please can you post a video how to do it? Or can you tell me how to perform Lokal update or OTA update?
 ... I wont to try Flash ROM but I do not understand the instructions.... Please can you post a video how to do it? Or can you tell me how to perform Lokal update or OTA update?