I've a Oneplus One running the original OS that came with it (CM11S). Accidentally replied 'Yes' to a google security prompt which identified the Settings app as harmful, and it was deleted.
As far as I can determine the only way of retrieving it is to reflash the ROM with the original OS, which I've downloaded a copy of. I've backed up most of the stuff on the phone, but if possible I'd still rather not go through the entire process of rooting it/unlocking the bootloader, etc. I haven't done it before and I'd rather not go through the hassle of wiping the phone and restoring everything afterwards.
If I understand the process properly, the point of unlocking the bootloader is to allow custom ROMs to be flashed onto the phone. I'm wondering if I can bypass this step if I'm only interested in re-flashing the original ROM. (Although I've a feeling that might still end up being seen as a security risk so not possible)
Or if there's any other way of getting the Settings app back, I'd appreciate suggestions