I crashed my Mini and don't work infinity focus in the camera. Focus only 1 m. Please help!

Hi there, I'm sorry to hear about the accident with your drone, please contact our support team via http://www.dji.com/support to open a case and send it in for a thorough diagnosis, we'll do our best to help this out.

There is just one way. Get it fixed by DJI
(or consider upgrading to a Mini 2 because a repair will set you back a considerable amount and you can use most of the acc from the mini 1 on the mini2)