Spd Upgrade Tool R4.0.0001 [portable] Here

Flashing is a high-risk procedure. Ensure you have the following ready:

Click the "Settings" button (two gears) if you need to choose specific partitions to flash, though it's usually best to leave these at default for a standard upgrade. spd upgrade tool r4.0.0001

Ensure your device is charged to at least 50% to prevent it from shutting down during the process. Flashing is a high-risk procedure

The tool should detect the device and automatically begin the flashing process. spd upgrade tool r4.0.0001

It exclusively works with .pac and .p5c firmware formats.

Hold the or Volume Up key (the "Boot Key") while connecting it to the PC via USB.