Maximum upload size changes in php.ini ignored – How to remove upload size limit?

Thanks @kaiser but not need to go through your solution I found a easy one and I’ll share here for newbie likes me.

If you’re working on a WP Network site then the steps are:

  1. At the top, hover over My Sites and then click Network Admin.
  2. At the left, hover over Settings and then click Network Settings.
  3. Scroll to the bottom of the page and change the Max upload file size to whatever you would like in KB.
  4. Click Save Changes.

By setting that value to 500000 I got 500M as max_file_size upload. Credits is for user here