A "4-file" firmware package is superior to a single-file version because it contains separate partitions for a deep system repair: BL (Bootloader):

⚠️ :

on his PC as an administrator. When he connected the USB cable, a blue "COM" box lit up, confirming the connection. Loading the Files:

While Google Drive links often expire or change, the following authoritative sites are the "top" recommended sources for verified

The standard source for official Samsung builds (requires a free account).