Hi
I thought I would add to this thread, I am having the same issue with my new replacement pineapple (last one was fried after a wetware issue and a usb battery pack).
I have a flashing amber light and a solid green.
Steps taken so far
I have changed the SD card for another
Formatted and re downloaded the upgrade.bin md5 files both 1.1 and 1.04
Performed the bricked reflash procedure
No luck
I can see the pineapple via ssh but this is only the MK5 Stager shell
Would love to get this working as I need to use it in a demo next week....