You should only reach for a Hard Downloader if you have tried everything else. This is for devices.
Downloading the firmware is only half the battle. To install it, you must use a tool called samsung hard downloader
In recent years, for newer Galaxy models (S20, S21, S22, S23, and A-series), the traditional resistor jig has been replaced by the . This looks like a USB cable with a button on the box. It serves the same purpose: forcing EDL (Emergency Download) or UART mode on Qualcomm and Exynos chips. You should only reach for a Hard Downloader
If Download Mode appears, congratulations. Now unplug the jig and plug in a standard USB cable to your PC. Open Odin. You should see an "Added!" message. To install it, you must use a tool
: Ensure your battery is at least 30% charged and Samsung Drivers are installed on your PC.