images doesn't get sent even after changing 'hasSupport' to true

When attempting to send an image, an overlay comes with

"Images unavailable" "Your contact's Briar does not yet support image attachments. Once they upgrade you'll see a different icon."

Then, I changed the constant FEATURE_FLAG_IMAGE_ATTACHMENTS to TRUE in TestingConstants.java With no luck, So I changed the following code -> (in android/conversation/conversationActivity.java - Line 267)

observeOnce(viewModel.hasImageSupport(), this, hasSupport -> {
				if (hasSupport != null && hasSupport) {
					// remove cast when removing FEATURE_FLAG_IMAGE_ATTACHMENTS
					((TextAttachmentController) sendController)
							.setImagesSupported();
				}
			});

to

((TextAttachmentController) sendController).setImagesSupported();

also, as another attempt with the same manner, I left the code as is but I changed the value of hasSupport=true manually ;

After that , whenever sending an image, nothing goes and only 'null' is sent. knowing that the same version of the build is used in both android devises.

Is it a bug ? or i am lacking something important ? in both cases i'd love hearing from you. By the way, thank you for this great application !