OP 8 canadian Variant stuck in Fastboot - OnePlus 8 Questions & Answers

Hey, my friend came to me with a device that was stuck in fastboot mode, upon further inspection i have determined that it is bricked and i need a bit of help
The info that pops up when i get it into fastboot mode is
Product name - kona
Variant - SM8 UFS
BootloaderVersion -
Baseband version -
Serialnumber - ########
secure boot -yes
device state - locked
I am unsure wether it is the global mode of it or the Tmobile version or the version all i know is it was purchased in canada, any help as quick as possible would be very much appreciated

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OnePlus 8t hard brick

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After flashing local update my phone go to crash dump mode. My oem unlock and usb debugging turned of during flashing. Then i used msm tool and flash again, after flashing my not booting. Just show OnePlus logo and turned off. What should i can do? Is anyone help me? Does my phone permanently bricked?
I very much doubt your phone is permanently bricked.
To get out of Crash Dump, see https://forums.oneplus.com/threads/stuck-at-qualcomm-crashdump-mode.1316587/#post-22185541
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It's been quite a while since I've flash anything on my devices but none of this is new to me, I just been feeling the itch to start flashing stuff again, I just wanted to be completely sure before flashing.

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I suggest to re flash stock rom hope you did not triggered knox 0x1 maybe you flashed wrong files and what about oem unlocl (bootloader) and usb debugging enabled?
Hold the power button down for 90 seconds.
Count slowly!

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Pleae help me how to solve this issue
This is a carrier version, so bootloader cannot be unlocked and there is no workaround.
I made the same mistake of purchasing the phone from a reseller and ended up with a locked bootloader. What's worse is that the battery has expanded with a few months and the back panel is coming off.
First and last time I ever purchase a phone from a reseller.

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