You’ll typically go searching for sahara.7z in two scenarios:
These tell flashing tools (like QFIL or MiFlash) where each piece of the firmware (bootloader, recovery, system) needs to go. sahara.7z
These are small pieces of code signed by the manufacturer that allow the computer to bypass security and write directly to the phone's flash memory. You’ll typically go searching for sahara
Sometimes, the archive includes the executable utilities required to initiate the transfer. When Is It Used? something went wrong
You tried to install a custom ROM, something went wrong, and now your phone is a black screen that only shows up as "Qualcomm HS-USB QDLoader 9008" in your PC's Device Manager.