Leo ran the .exe . Instead of the slick, minimalist Sony interface, a window popped up with a pixelated skull wearing a crown. A chiptune version of a heavy metal song started blasting through his headphones.

A "soft brick" (device stuck in a boot loop) is common. A "hard brick" (device completely unresponsive) is rarer but possible, especially if steps aren't followed precisely. Flashmode (Green LED) is your main tool for recovery.

If you provide the model, I can provide more specific instructions. Share public link

Download the official package from the Android Developer website to acquire the adb and fastboot binaries.