TK1 Download link for Android 5.1

请问能提供一个安卓5.1的下载地址吗?

Welcome to Jetson & Embedded Systems developer forum.
Please create the topic and issue in English manner.
Other developers can understand your issue and to share their experience with you quickly if they ever met similar issue in design stage.
And then other users could be leverage from this issue to get benefits.

For your issue, you may refer to below link:
https://devtalk.nvidia.com/default/topic/767885/jetson-tk1/android-on-jetson-tk1/

Thank you.

thanks!