WhatsApp boot loop
For my SM-J500FN I was searching for a Rom which is fast, stable and is satisfied with the 8Gig internal Flash. Because I used the actual Marshmallow 6.0.1 Stock Rom I made a downgrade to 5.1.1 (J500FNXXU1AOI1_J500FNDBT1AOI2_J500FNXXU1AOI1_HOME .tar.md5) and flashed the cm-12.1-20161018-UNOFFICIAL-j5nltexx.zip via TWPR (twrp-184.108.40.206-20161005-j5nltexx.tar.md5) as described. After that I installed open_gapps-arm-5.1-micro-20180306.zip. After boot up everything looks great until I install WhatsApp form the Google Playstore. If I open WhatsApp the SM-J500FN is crashing and CM12.1 is booting until I can input the Pin for my SIM card, then it is crashing again and booting and will stay in this boot loop. Can someone help to fix this issue?