

Now, if you have found yourself in this ordeal, you can easily unbrick your OnePlus 8T using the MSMDownload tool. And if you cannot boot your phone into Fastboot/Recovery mode either, it means that you cannot install the stock firmware by flashing the Fastboot ROM to unbrick it easily. If your OnePlus 8T ticks any of the signs listed above, then it’s probably hard-bricked.

Your phone shows the Qualcomm CrashDump Mode screen and is identified as ‘ Qualcomm HS-USB Diagnostics 900E‘ in Device Manager when connected over USB.When connected to a Windows computer over USB, your phone is detected as ‘ QUSB_BULK‘ or ‘ Qualcomm HS-USB QDLoader 9008‘ interface under Windows Device Manager.That’s because the secondary bootloader is inaccessible. Your phone shows a black screen and might just vibrate when connected to the wall charger or the computer over USB.A simple way to check this is by holding the Volume Up and Power keys together while the phone is switched off. Your phone doesn’t boot into Fastboot and Recovery modes even after pressing the proper key combination.Your phone shows the ‘ Your Device is corrupt‘ message while booting and performing a factory reset doesn’t make any difference.

So how do you differentiate if your phone has been soft-bricked or hard-bricked? Below are some of the signs that could help you figure this out. a soft-brick or a hard-brick), your OnePlus 8T could stay stuck at the OnePlus boot screen and/or further get into a boot loop.
