How to change the iOS app icon in iTunes Connect when update the version?

Question

I am trying to add a new version of an existing iOS app.

I successfully uploaded the binary and the screenshots. My problem is I need to change the app icon.

When I change the app icon and click save button it displays a error message

"You must upload a large app icon." My icon image size is 1024 * 1024 and it's in png format.

Answer 1

Finally I done it. I reject my binary from the queue and then I uploaded a new binary also uploaded a new 1024 * 1024 size large icon and now my prob is solved.

Answer 2

For all images and icons, the PNG format is recommended. You should avoid using interlaced PNGs.

The standard bit depth for icons and images is 24 bits—that is, 8 bits each for red, green, and blue—plus an 8-bit alpha channel.

You don’t need to constrain your palette to web-safe colors.