Some users have reported a glitch in the Latitude 3420 BIOS where setting and then removing an NVMe SSD password can temporarily unlock admin settings.
Flashing a patched BIOS is a high-risk procedure. Before proceeding, you must be aware of the potential consequences: dell latitude 3420 bios bin file patched
Disconnected the AC power adapter and the internal battery completely. Located the SPI flash ROM (BIOS chip) on the Latitude 3420 motherboard . Some users have reported a glitch in the
Ensure you do not alter the overall file size by accidental insertion. The final file must match the exact byte size of your flash chip capacity (typically 16MB/128Mbit or 32MB/256Mbit depending on the exact motherboard revision). Flashing the Patched File Located the SPI flash ROM (BIOS chip) on
Solder the chip back to the motherboard (or remove the test clip), reattach the CMOS battery, and plug in the power supply.