I tried to jail break my kindle a while back. But Amazon auto pushed a new firmware and prevented it minutes before I could reboot with the crack. So now my device is up to date and catching dust again. Thanks Amazon.
Yeah they seem to actively prevent jailbreaking on more recent devices. I specifically picked up a used Kindle 4 NT for this project, because it's so easy to jailbreak.
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I tried to jail break my kindle a while back. But Amazon auto pushed a new firmware and prevented it minutes before I could reboot with the crack. So now my device is up to date and catching dust again. Thanks Amazon.
Yeah they seem to actively prevent jailbreaking on more recent devices. I specifically picked up a used Kindle 4 NT for this project, because it's so easy to jailbreak.
Try Onix Boox. They have stock Android. Some of them have internal SD card, which is easy to replace with your own.