A few questions:[LIST][*]What instructions exactly have you followed? Instaling SFOS on the Nexus 5, upgrading an SFOS version to another or changing the boot logo?[*]How do you mean "modified CM12.1"?[*]Multirom or single rom environment are you using?[*]Are you using kexec kernel? (Recommend to read this topic.)[*]What Android version was it on the device before you started?[*]Sili question, is that device a Nexus 5 or a 5X? [/LIS]