I'm sorry but that didn't work for me. Since you say you've done it many times, did it work for you this time too?
I did exactly as you described, just added the .png files for the atlas and icons and then zipped it back and switched to .apk
When I sign the file with zipsigner app with platform mode, it says there was a problem parsing the package.
I really want to use my custom Flappy Bird Mod but this is driving me crazy hahaha
Okay, finally I got what I was doing wrong. I was zipping the whole folder, not the content. I managed to get the apk, sign it and install it... but it FC when i hit the "Play" button. I'm close to succeed! Any ideas on how to fix that? This time i just replaced the atlas.png file and nothing else.
why don't you simply follow the instructions in the OP?