[Google Pixel 5a] Nunyaaa:
Tl;Dr - my pixel 5a5g got the black screen of death a few months ago. Last night, I tried using the flash tool to try to flash it back to Android from GrapheneOS - so that Google would be willing to fix it maybe. Flashing seemed to fail. Unsure what to try or do next.

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My Pixel has had the black screen of death for a few months now. I'm assuming it is from falling a few feet to the ground. It had a custom ROM - GrapheneOS - on it. Unless I can reflash to stock Android, it sounds like Google/ubreakifix won't look at it, and thus - no chance of repairing it for free or a smaller charge.

The other night, I tried attaching an OTG keyboard to the phone to log in to it. Since the display is black, I'm not sure it worked. I also tried several times to press where I thought the numbers for logging in would be - on my completely black screen. Somehow, I was eventually able to get my PC and Google's flash tool to recognize the phone. However, I might have messed up on some steps - because I think it might be bricked now.

I think I forgot to remove the grapheneOS key via their Web installer before trying to flash android. I used minimal abd tools to unlock the bootloader (and it still says it is unlocked)... When I tried flashing back to stock android using the android web tool, it went through the motions, but then said something like it needs to detect the phone again after flashing. And it wouldn't detect the phone again. Even if I unplugged then replugged the phone. The directions said I shouldn't/wouldn't need to press any keys on the phone for this step, but it just wasn't progressing further... So, I ended up holding the power button and volume down button - and it went into fastboot(?) again - or whatever that does.

I can repeat the steps of going thru the motions of flashing the device now, but now it gives an error saying something like it can't lock the device.

Being that the 5a screen is completely black, I have no idea what is going on - or what to do from here. I've reached out to some local repair places, but honestly, if I can't flash it myself to stock so that Google/ubreakifix would look at it, then it probably isn't worth sinking money into.... There's decent condition used ones around $120 or something out there... And ubreakifix would probably charge between $160 and $200 for screen replacement + labor - and I'm assuming that's not including a motherboard replacement - if necessary.

Ubreakifix said that they would be willing to look at it, but they can't actually do any repairs to it if it isn't running stock Android. They'd charge for the labor, and they'd temporarily use a screen to look at what it is doing/not doing... But wouldn't actually do the screen repair. I'm assuming the phone never flashed completely, but I'm hoping they can tell me if their diagnostic tools work on it - since I imagine it should work -- IF stock Android is actually installed again on it.

I've also looked into doing something like getting a displaylink adapter + display link app so that I can see the screen on the computer... But even after my multiple attempts of logging in to the phone, I can't send app downloads to the phone. Google Play store shows that the phone was "last seen" months ago... And even if I could push the app download, GrapheneOS still requires manual approval from the user to accept/finalize install of the app... Which would be pretty hard to do without seeing the screen. And obviously since I've tried flashing the phone several times last night, i have no idea what the phone is looking like. Probably app downloads are out of the question now.

Apparently you can't normally do display out of any sort with Pixel phones. The rumor I've seen on here and/or reddit is that Google got rid of it years ago, maybe so that they can sell more Chromecasts...

Does anyone have any further suggestions? I could try using scrcpy or whatever it's called, but I probably should have tried to use that before attempting to flash the phone... It's sure hard to give up on something that I spent good money on. I'd like to think there's something I haven't tried yet that I can do to save it...