OK, then it must be something easy to understand: Lets see to beginn systematic:
1. My Armbian_5.27_Bananapim2ultra_Debian_jessie_dev_4.11.0-next-20170427.img is (1.346.371.584 Bytes in size.
2. It has one partition
./Armbian_5.27_Bananapim2ultra_Debian_jessie_dev_4.11.0-next-20170427.img1
2048 2629631 2627584 1,3G 83 Linux
nothing else.
3. I have used a sundisk ultra 32GB formated with SDFormater and used Win32DiskImager both under Windows 7.
4. I have replugged it in the Windows-PC and it could not use it at all (what wonder why) it has only a LINUX partition.
5. I have put it into the bananapim2u and replugged the power supply and nothing happens,
What is wrong ?
With the BPI -Images Debian Jessy or Ubuntu my HW-works, but as it is already known that s.th is wrong with the DDR-SDRAM-MenControllerConfig it is running 10-30 Minutes under memtester until it freezes.