: Follow the on-screen prompts to connect the device while it is in its specialized "Download" state. Samsung Smart Switch
: Provide the Model Name (e.g., SM-G991B) and Serial Number (S/N) found on the back of the device or its original box. Download Flash SSU rar
In some technical circles, "SSU" refers to specialized service tools (often distributed as .rar files) used for unlocking or repairing specific chipsets (like Spreadtrum or Unisoc). : Follow the on-screen prompts to connect the
: If your phone is bricked or in a boot loop, you can use the "Emergency software recovery" option within the PC app by entering your device's model and serial number. Download Flash SSU rar
This is the safest method for "emergency software recovery and initialization" (often called "flashing" by users) for modern Samsung Galaxy devices.