https://onlinedocs.microchip.com/oxy/GUID-EBE53747-692E-4A56-B6E9-64B682F1ABBC-en-US-20/GUID-D1AB5732-AB4C-4D03-88B2-CFAFC8994E8D.html
14.3.1 Enabling LPBOR
The LPBOR is controlled by the LPBOREN Configuration bit. When the device is erased, the LPBOR module defaults to disabled.
enabling