The NCA signatures warning is about the NSP files being altered, not about whether or not you have signature patches installed. Make sure your NSP files are coming from a trustworthy place. In my instructions, I said to use the signature patches from a very specific source, not to download them through an NSP installer.I couldn't install most games using Awoo Installer, with this combination. Awoo Installer's latest signature patch(es) are for firmware version 11.X. Even after installing the latest signature patches, it refused to use them. So I first opened it (Awoo Installer), deleted/uninstalled signature patches via the GUI, then went back to applying the signature patches on the memory card (hekate ones) for 12.X. After that it worked . Although Awoo installer is still warning me about NCA signatures and it thinks there are no signature patches installed. Posting this for newbies who might be in the same boat.