How do I fix a frozen iBook down?

[iMore Question]

This is on a IPad 2 with os 8

 

[bamf-hacker]

force quit iBooks. Press and hold the home button until iBooks closes.

After you are back to the home screen open the task switcher and swipe up iBooks. Then try to re-load it.

 

[bordercollie3]

I tried this, also deleted it but wouldn't download to I pad but will download to iPhone 6.