Sometimes "Deploy image" function does not write the whole image correctly to the USB drive. HOB must make sure that "sync" command is issued in order to properly write the image to stick.
Created attachment 1829 [details] the patch with the fix
Merged: http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=1f16ca9fba325f5ddbb1edad5bbad78d990de5e0
Vali, Can this fix be merged in dora too? Thanks, Alex.
I've just sent the patch on oe-core with Robert in CC.