: EDL mode is a Qualcomm-specific boot mode that allows communication with the PC before the OS or standard recovery environments load .
To use these tools, you must first put your device into EDL mode, which can be done through hardware or modified cables:
Once you use an unofficial tool in EDL mode, the Knox Warranty Bit (0x0304) is permanently tripped. , even if you relock the bootloader.
is a Qualcomm-specific low-level protocol. It allows you to flash firmware directly to the bootloader, partition table, and raw NAND —bypassing all Android security layers.