How to change someone's profile picture in WhatsApp? I don't like one of my WhatsApp friend's picture (we chat regularly though his photo disgusts me), so I want to change his profile picture.

I did change its source image, but it didn't work on the small image that you see on the chat screen next to the name. Is it possible to change it? If it's how?

I did it.
With this command: adb push C:\Users\portakal.AndroidStudio\system\tmp\image.jpg  /data/data/com.whatsapp/files/Avatars/XXXXXXX@s.whatsapp.net.j

XXXXXXXX is the number and image is the photo that I wanted to see instead of his.
Try this out. To summarize the steps in the link:


Resize the pic you want to use to 561×561.
Save it in /sdcard/WhatsApp/Profile Pictures on your phone.
Then rename it to your friend's phone number, including country code first. (If Jenny lived in Manhattan, her filename would be 12128675309.jpg)
Reopen WhatsApp and the picture should be there.