@balbes150 Hello Oleg, I have downloaded file KM8P-MHC19J-20170224.165245.V0923.img  from 4pda thread on Km8-P ( http://4pda.ru/forum/index.php?showtopic=807465 ) , is there any way I could extract the u-boot binary from that image file and put it on an SD card using your previous instructions? Or do you suggest I try another u-boot binary ? Thank you for your help.      Edit: I have answered my own question by following the instructions on this page: https://www.cnx-software.