https://www.google.com/search?client=firefox-b-d&q=lumia+950+whatsapp+auf+android&sa=X&ved=2ahUKEwj0tIzRqL7jAhXDY1AKHRINAeUQ1QIoBHoECAoQBQ&biw=1862&bih=1021
https://answers.microsoft.com/de-de/mobiledevices/forum/all/lumia-950-xl-whatapp-chats-%C3%BCbernehmen-zu/6244e376-ba38-455c-83f0-528f1c353c29
https://www.google.com/search?client=firefox-b-d&ei=rRYwXeypBcKtkwWGx4ngBw&q=lumia+640+interop+tools+whatsapp&oq=lumia+640+interop+tools+wha&gs_l=psy-ab.3.1.33i21l2.12546863.12553360..12554611...3.0..0.125.538.6j1......0....1..gws-wiz.......0i71j0i22i30j33i160.46cgCR-leXo
https://support.microsoft.com/de-de/help/12379/windows-10-mobile-device-recovery-tool-faq
https://www.wpinternals.net/index.php/downloads
http://android.stackexchange.com/questions/88662/nexus-5-stuck-on-flying-color-dots-lollipop-screen-after-hard-factory-reset
http://forum.xda-developers.com/google-nexus-5/help/nexus-5-stuck-boot-loop-lollipop-t3098632
https://support.google.com/nexus/answer/4596836
https://developers.google.com/android/nexus/images?hl=de
https://www.youtube.com/watch?v=OPuCmfhzgbg
https://www.youtube.com/watch?v=8g4gXoSNh3Y
