kukulo

I had the same message on my Cubietruck. The board was in my desk for two years, it was a HW failure.
Some search on internet suggested a bad soldering under DRAM chip.
So with heating gun I heated up the DRAM chip for approx 5 minutes at 250 Celsius degrees and Cubietruck finally booted from SD Card with Cubietruck Armbian image 5.31.
 

I tried the linux-u-boot-next-lime2_5.37.180112_armhf.deb in combination with 4.14.8-sunxi kernel and it is refusing to boot without HDMI attached.