If you are using a Lenovo M9 Tablet that is not a co-branded NOOK model, you will not be able to download the Barnes & Noble NOOK App for Android on to that device.
Due to a conflict with the launch of the NOOK 9” Lenovo Tablet, we had to pull the NOOK app from the Google Play store for any device with the model code TB310FU. We currently don’t have a timeline for when this might be resolved and regret this inconvenience.
As always, NOOK content is available for purchase on bn.com and can be read on all NOOK devices and our free Barnes & Noble NOOK Reading Apps.