Obtain the specific stock ROM for your exact device model. This must include the programmer file (usually prog_emmc_firehose_****.mbn ) and XML files ( rawprogram and patch ).
Flashing firmware is an inherently risky process. If the loader crashes mid-flash, the phone can be left in a state where it cannot even enter recovery mode. High-quality loaders are optimized to handle data transfer errors and maintain a stable connection, significantly reducing the risk of interruption during the critical write process. qualcomm flash loader v10 high quality