to begin the flashing process. A green progress bar will appear.
A black screen. Not the "Qualcomm CrashDump" mode. Not the "Bootloader unlocked" warning. Just... the infinite, silent void. No vibration. No LED notification. No recovery. No fastboot. It was as if the phone had been lobotomized. I had hard-bricked it. The USB cable did nothing; my PC only spat out a generic "USB device not recognized" chirp. The OnePlus 3T, that indestructible slab of sandblasted aluminum, was a paperweight. oneplus 3t unbrick tool
Step 3 — Harder fixes: EDL / Qualcomm emergency flashing Use when device is not recognized in fastboot or recovery, but can enter EDL (Emergency Download) mode. This is advanced and riskier. to begin the flashing process