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Re: Question about how to proceed in order to try Cyangenmod on the Nexus 4
In this case, the fact you have a Mac is irrelevant, most of the AIO tool kits that do backups and stuff are not very reliable... I tried it when I initially unlocked my phone and wound up having to wipe again and restore manually anyways.
Originally Posted by Crisdean
In a locked, unrooted device, there is no "whole phone backup"... you will have to backup the pieces that you want that are important (SMS, pics, contacts, etc) and any app settings or other stuff you wish, but without root access there is no way to do a complete phone backup. And even when you do have and root and do this, restoring it is questionable as well, especially between ROMs, for example, NEVER restore apps and settings (especially system settings) between ROMs, if you are stock and want to go to CM11, that's fine, but reinstall and setup everything manually, then restore the data (SMS, pics, other files) and go. If you are going to test ROMs, fully expect to get your device wiped clean multiple times, it is part of the process and backup and restore between ROMs is rather questionable at times... even when it works, it can cause underlying issues that look like something else (battery drain, random reboots and FCs).
Oh, and the OTG thing is completely irrelevant, the N4 doesn't support OTG... there are custom kernels that have OTG support, but the N4 still doesn't have the hardware to provide power to OTG devices, so to use OTG you need a kernel that supports it and a OTG Host cable with power.
Best bet is to backup everything you need and move it off the phone, unlock (will wipe everything), install a custom recovery like TWRP, perform a nandroid (recovery) backup, and move ahead.
BTW, if you are scared of losing data or wiping your device, then ROMing may not be the thing of you... it is very common to have to wipe your device multiple times, even on the same ROM, and sometimes without warning. If you are going to try the custom ROM thing, it's fun and can be very productive, but you will get your device wiped and will lose stuff once in a while. Every Android user should be ready for a device wipe all the time, seriously, often updates go bad and the first step is often a FDR to fix it.