Install the latest version of the (v2.7.477 or newer is recommended for updated chip identification tables).
Once the device is in EDL mode, it cannot immediately read or write complex file systems. It speaks a primitive, command-based language called the . qpst sahara memory dump upd
Production devices usually require a "signed programmer" file (e.g., prog_emmc_firehose_xxxx.mbn ) specific to the vendor (Samsung, LG, etc.) to establish the Sahara handshake. Install the latest version of the (v2