I can confirm that I have had an intact image and that I used the right port for the power supply. I have the black banana pi case, which marks the ports clearly. For the images, I did check integrity and I even downloaded the images several times.|
The assumption that no reason exists, is valid if (1) the update after 14.08 is 100% exactly the same as 14.09 image, and (2) the hardware is exactly the same. About (1), I don't have all the knowledge about the exact differences between the images, but I assume update from older version and boot directly from new image is not exactly the same, since in my case i couldn't run directly the new image, but succeeded after an update.
About (2), even if the banana pi is similar for everyone, there are still a few variables like power supply and the SD card used.
I found that the power supply I initially used seemed to be weak and unstable. I suspect (I didn't test this) that the power supply I used, is good enough to boot 14.08 image, but not good enough to boot 14.09 image. The power supply I used was "rated" 2.1A, but I don't believe this.
(extra info: when i tried to boot 14.09, my router leased like 20 different ip's in like 10 minutes to my banana pi with which was shown with a weird device name)
If bananian is not booting, try old version (14.08) and check if the power supply really is strong and stable enough and check if the usb cable is fine.