We've developed a new factory images format optimized for web installation which avoids the need for fastbootd mode and greatly reduces memory/storage usage. The new approach is compatible with 5th gen Pixels and later. It's deployed on our staging site:

https://staging.grapheneos.org/install/web

We'd appreciate help with testing the new web installer on our staging site. It should reduce issues caused by low quality USB connections/drivers by avoiding switching to a different mode. It should also eliminate the need to install a fastboot driver on up-to-date Windows 11.

We'll wait for feedback from people using it successfully across different operating systems and devices.

Sections for working around Debian, Ubuntu and Windows USB deficiencies should be unnecessary other than the legacy extended support devices so we'll likely remove those.