Originally Posted by TooMuchSloeGin
I am tempted to dispute this. I had a brand-new HD+ with stock firmware v2.0.4 which consistently (and always at first attempt) booted from sd card (Kingston 4GB, cl 4).
After upgrading to stock firmware v2.1.1, but with no other changes, it wouldn't boot once in 50+ attempts. The sd card was unchanged, the HD+ hardware was the same, so this behaviour would seem to point to the firmware change as the culprit, doesn't it?
It does, but booting is controlled by the hardware chip firmware. There is no way for b&n to change that remotely.
A way to test your theory is to do an 8 failed boot with stock recovery installed and go back to 2.0.4. Then see if your booting trouble goes away.
Edit: If that is really the case, the solution is to revert to 2.0.4 and immediately upgrade to CM. Then it should boot SDs ok.
Sent from my Nook HD+ running CM10.1 on emmc.
See my Nook Color Tips Thread here
and my Nook Color EMMC Partition Repair Thread here
and my Nook Color Updated CM SD Installation Instructions here
and my Nook HD/HD+ stock tips thread here
and my Nook HD/HD+ CWM Root Tools thread here