Non-volatile (NV) memory items are critical for storing configuration parameters, calibration data, and state information across power cycles in embedded systems. However, direct manipulation of NV items during development, debugging, and field updates remains challenging without a dedicated tool. This paper presents the design and implementation of an – a cross-platform utility that allows engineers to read, write, verify, and backup NV parameters from external hosts via standard interfaces (I²C, SPI, UART, or debug protocols). The tool incorporates error-checking, checksum validation, and item-level metadata parsing. Experimental results on an ARM Cortex-M platform with EEPROM and Flash-based NV storage demonstrate 100% read/write integrity, 95% reduction in manual debugging time, and seamless integration into CI/CD pipelines. The tool is released under an open-source model.
: After writing a new value to an NV item, the device typically performs an automatic reset to apply the changes. Interesting Applications A common "interesting" use for these tools is enabling 5G bands nv items reader writer tool
The most useful feature of an NV items reader/writer is Device Resurrection —taking a phone that has no signal or unknown baseband due to corrupted memory and restoring its identity and connectivity. Non-volatile (NV) memory items are critical for storing
It can facilitate writing a "clean" NV backup from a working phone to a damaged device of the same model to fix persistent software-based hardware issues. Common Software Variants : After writing a new value to an