Originally Posted by mathius89
What is the Update.app? Sorry for my ignorance but I have no idea.
You flashed from CWM, that's why you have this problem. Download a ROM that can be flashed by dload method, and that ROM must be a stock ROM. Stock ROM's are not in a flashable zip's format, but they are in a form of an update.app file.
Create a folder in your sdcard and name it dload. In dload folder put the update.app file. After that press volume up + down + power button all at once until you see the HUAWEI logo, after that release those buttons.
For this to work you must have stock recovery.