[Nexus 6P General] nopulse76:
After updating to the new Oreo update, my phone was in the constant Google logo loop. I was ****ting bricks. After finding this site, I can't believe I managed to fix it through trial and error. Here's what I did.

Since I couldn't get my phone past the Google logo loop, I grabbed a hair dryer and heat my phone when the phone was looping. Eventually my phone went past the Google logo and started the Android animation. It finally booted up and I could log in, but not for very long so you have to be quick. If the phone crashes and loops again, heat it up again.

Once you're about to boot into your phone, IMMEDIATELY go to Settings then System, then click About Phone and tap on Build Number 7 times. Once you have unlocked the Dev mode, go back and go into the Developer Options and unlock both OEM unlocking and USB debugging.

At this time while you're in your phone, backup what you can or sync everything!

Then reboot your phone, when you see the Google logo, hold down the power button and decrease volume button. This should boot you into the bootloader screen etc.

Next go to https://redirect.viglink.com/?format=go&jsonp=vglnk_150722508560622&key=f0a7f91912ae2b52e0700f73990eb321&libId=j8eoox2p01000n4o000DA2tibhbwi&loc=https%3A%2F%2Fxdaforums.com%2Fshowpost.php%3Fp%3D74041226%26postcount%3D1408&v=1&out=https%3A%2F%2Fdeveloper.android.com%2Fstudio%2Freleases%2Fplatform-tools.html&ref=https%3A%2F%2Fxdaforums.com%2Fnexus-6p%2Fgeneral%2Fguide-fix-nexus-6p-bootloop-death-blod-t3640279%2Fpage141&title=%5BGuide%5D%20Fix%20for%20Nexus%206P%20Bootloop%20of%20death%20%7C%208%2F22%20-%20Android%20O%20Working%20-%20Post%20%231408&txt=https%3A%2F%2Fdeveloper.android.com%2Fstudio...orm-tools.html and download the tools. Make a folder under your C: called adb. Extract the platform-tools-latest-windows.zip into the adb folder.

Next Press the windows key button your keyboard, under search, type command prompt and open command prompt. In command prompt make sure you're in the C:\adb directory you made.

In the C:\adb directory, type fastboot flashing unlock. It should give you a msg on your phone asking if you want to unlock it. Using your volume buttons, select yes and press the power button on your phone. Your phone should be now unlocked.

Next go to Go to https://redirect.viglink.com/?format=go&jsonp=vglnk_150722358296214&key=f0a7f91912ae2b52e0700f73990eb321&libId=j8eoox2p01000n4o000DA2tibhbwi&loc=https%3A%2F%2Fxdaforums.com%2Fshowpost.php%3Fp%3D74041226%26postcount%3D1408&v=1&out=https%3A%2F%2Fdevelopers.google.com%2Fandroid%2Fimages&ref=https%3A%2F%2Fxdaforums.com%2Fnexus-6p%2Fgeneral%2Fguide-fix-nexus-6p-bootloop-death-blod-t3640279%2Fpage141&title=%5BGuide%5D%20Fix%20for%20Nexus%206P%20Bootloop%20of%20death%20%7C%208%2F22%20-%20Android%20O%20Working%20-%20Post%20%231408&txt=https%3A%2F%2Fdevelopers.google.com%2Fandroid%2Fimages and download 8.0.0 (OPR6.170623.019, Sep 2017) image which is called angler-opr6.170623.019-factory-9fd72ad6.zip When its downloaded, extract the angler-opr6.170623.019-factory-9fd72ad6 into your adb folder. Right click on flash-all and click open. It should now be flashing the image to your phone. Once its done, the window should say press any button to close the window.

Next go to https://redirect.viglink.com/?format=go&jsonp=vglnk_150722328747813&key=f0a7f91912ae2b52e0700f73990eb321&libId=j8eptfpd01000n4o000DA2tibhbwi&loc=https%3A%2F%2Fxdaforums.com%2Fnexus-6p%2Fgeneral%2Fguide-fix-nexus-6p-bootloop-death-blod-t3640279&v=1&out=https%3A%2F%2Fdrive.google.com%2Fopen%3Fid%3D0B7TP6GXR0wAVWVlvckU5LUtkYkE&ref=https%3A%2F%2Fxdaforums.com%2Fnexus-6p%2Fgeneral%2Fguide-fix-nexus-6p-bootloop-death-blod-t3640279%2Fpage141&title=%5BGuide%5D%20Fix%20for%20Nexus%206P%20Bootloop%20of%20death%20%7C%E2%80%A6%20%7C%20Huawei%20Nexus%206P&txt=Download and download the Oreo4Cores.image Copy the Oreo4Cores.image to your adb folder.

Press the windows key button your keyboard, under search, type command prompt and open command prompt. In command prompt make sure you're in the C:\adb directory you made.

In the C:\adb directory, type fastboot flash boot Oreo4Cores.img.

Once done, type fastboot reboot and your phone should boot up without any issues.

I just want to thank all those that made the fix to the brutal google loop. You guys are heroes!