M8 GPE Bricked and HBOOT is Stuck - AT&T HTC One (M8)

So I flashed a unofficial lollipop rom for my m8, but then I found it slow and buggy, so I went back to TWRP and restore it back to my GPE 4.4.4. However, when I boot it back, it turns out like this, I think it is bricked. When I plug it into the computer, the computer detects the phone, but it adb does not, probably because I did not turn on debugging in the lollipop rom.
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Then I try to go back to bootloader. When I enter bootloader, it automatically jumps to HBOOT, checking something, and pops up this page. If I hit "yes", then it fix it and reboot, but when I come back to bootloader, it still jumps to this page. If I hit no, same thing. When I plug it into the computer, the computer doesn't detect the phone at all.
So I am stuck, any solution please?

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thousight said:
So I flashed a unofficial lollipop rom for my m8, but then I found it slow and buggy, so I went back to TWRP and restore it back to my GPE 4.4.4. However, when I boot it back, it turns out like this, I think it is bricked. When I plug it into the computer, the computer detects the phone, but it adb does not, probably because I did not turn on debugging in the lollipop rom.
Then I try to go back to bootloader. When I enter bootloader, it automatically jumps to HBOOT, checking something, and pops up this page. If I hit "yes", then it fix it and reboot, but when I come back to bootloader, it still jumps to this page. If I hit no, same thing. When I plug it into the computer, the computer doesn't detect the phone at all.
So I am stuck, any solution please?
Click to expand...
Click to collapse
When you are on the second screen, does your computer pick it up?

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No unfortuanately

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Take the external sdcard out and put it in another device,you need to move/remove the "0P6BIMG.zip" file .once file is removed put the sdcard back in your phone or you can boot hboot without it even and the rest of the options should be there like normal

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thousight said:
I think it is bricked.
Click to expand...
Click to collapse
If the screen comes on its not bricked.
thousight said:
When I plug it into the computer, the computer detects the phone, but it adb does not, probably because I did not turn on debugging in the lollipop rom.
Click to expand...
Click to collapse
You need to be in recovery for adb to work. USB Debugging only makes a difference if you are trying to connect adb when the OS is booted (which is obviously not the case for you).
As mentioned above, you just need to stop it from trying to update. After that, you probably just need to get a known good ROM on the phone or SD and flash in TWRP. Or at worst, you may need to re-install TWRP and/or update to a newer TWRP version if its outdated.

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I had the same problem yesterday and removed the 0P6BIMG.zip file like jball said rebooted 2 or 3 times more and reloaded TWRP and venom one. Now I'm replying with that phone.