: Most mobile devices use a proprietary vendor interface. Accessing this often requires putting the phone into "Diagnostic Mode" (Diag Mode). NFC/RFID Readers
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When you "read" NV Items, you dump raw binary data from the SPI chip. When you "write" NV Items, you flash modified data back—a high-stakes operation that can either unlock hidden GPU features or permanently destroy a device. nv items reader writer best