We need an unlocked bootloader for this to happen. Amazon are not going to release android 5 or any other updates for this phone. This has become clear. I agree it would have been great if they would have unlocked the bootloader at least.
[COLOR="grey"]/* * I am not responsible for bricked devices, dead SD cards, thermonuclear war, * or you getting fired because the alarm app failed. * Please do some research if you have any concerns about features included * in the products you find here before flashing it! * YOU are choosing to make these modifications. */[/COLOR]