@Basheer2
Welcome to HP Support Forums. 🙂 I came across your post and would like to help.
I understand that you need the Android Lollipop update for your HP 7 voice tablet.
You may visit our HP website: www.hp.com/drivers to check for the available Android updates and download them to your HP 7 voice tablet.
You will have to enter the exact model no. of your HP 7 voice tablet in the website to search for specific updates for this device.
I hope this information helps. Feel free to let me know if you have any questions. Take care! 🙂