Issues flashing back to public build after Graphene

Dreawyn

Hello,

I recently tried GrapheneOS and while I liked it, I had some reasons to return to stock android on my Pixel9 XL

I have followed the guide on GrapheneOS' website, and HAVE managed to install the canary build for my pixel9, yet for some reason the public release fails to even initiate the download. and simply pops up with the message "Flash Failed - Could not find end of central directory" , and retrying does not help.

I have tried on a different browser (Both stock chrome and brave) - Popups etc are enabled and as I mentioned I was able to flash Graphene AND the canary version and yet the android 16 latest public build refuses to flash.

Any advice? Should I try to flash 15/14 and update?

Running windows 10 IoT LTSC

Edit: Also tried on another PC with windows 11 pro, same issue.
Also tried three different cables, ranging from UBA A - C and USB C-C

userofgos

Dreawyn did you remember to remove the non-stock verified boot key? See https://grapheneos.org/install/web#replacing-grapheneos-with-the-stock-os

de0u

Dreawyn Is this useful? https://www.kuketz-forum.de/t/pixel-9-kann-nicht-von-grapheneos-auf-stock-android-zurueckgesetzt-werden/14605 It seems as if some users may be having trouble with Google's web installer but not with CLI installs of official Google images.

tylerwylie

I had to go into the web installer and go back 1 revision as the latest image doesn't flash correctly. In the flash tool you should be able to specify the build, or download the OTA and do the flash back to public via the CLI method:

https://developers.google.com/android/ota