User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:44.0) Gecko/20100101 Firefox/44.0 Build ID: 20151111004055 Steps to reproduce: I downloaded the developer preview from hacks.mozilla.org . Installed the apk file. Changed the launcher and tried to use it. Actual results: The launcher loaded displaying Firefox OS and then it showed FoxFood. It stayed like that for a long time and I tried it after restarting it and it was still the same. Expected results: The developer preview should have loaded and I should have used Firefox OS on my phone.
Thanks for the report! Can you get a logcat output?
This is an x86 Android device. http://www.gsmarena.com/asus_zenfone_5_a500cg-5952.php AFIK the Firefox OS developer preview is ARM only.