I appreciate your efforts "old man" !

SD card size doesn't matter, all smaller SD cards than 64 GB should work. Also, when you insert SD card with unlock files (scripts) it's none visual process, all scripts are executed in the background and the final result should be new visual menu. In your case that doesn't happen for some reason and I'm not sure why. Even if the internal memory is completely messed up, that couldn't affect the unlock scripts, so that is not the reason either. Please try another SD card if you have one and always make sure that is Fat32 formatted and than try again with unlock v3 and v4. If that won't work we can go to the last resort - creating unlock menu executing from a flash disk, not from SD, but in that case I will need a complete backup of your device.