Solution: Version 1434 may not support newer NV IDs (>65535). Try a newer version (e.g., RF NV Manager 2.2).
RF NV Manager is a Qualcomm-based software tool used to read, write, and backup the NV (Non-Volatile) items on mobile devices. The "RF" stands for Radio Frequency, indicating its primary use is repairing a phone’s ability to connect to cellular networks (fixing IMEI, Baseband, Signal issues). rf nv manager 1434 free
(This is a general guide for standard versions of the tool) Solution: Version 1434 may not support newer NV