@JMCC, @jock When i run script "media-rk3288.sh",  it says "Ctrl C to abort and Enter to continue". I attached "install.log" file for your reference i checked the install.log, it tries to upgrade system to 4.15.0 but failed.   I have got an image from Manufacturer which doesn't have any userland Mali. I am trying to install the same. For that, I am advised to upgrade the kernel as well. Using RKDevTool(AndroidTool.exe), i checked Device Partition of my board and got belo