Our greatly improved web installer is now available through our official site:
https://grapheneos.org/install/web
For everything other than legacy extended support releases for 4th generation Pixels, it uses a new installation process. Main benefit is higher tolerance for bad USB support.
The new installation process uses our optimized factory images format. Main benefit is avoiding rebooting fastbootd mode, which will improve portability to systems with USB connectivity issues. It also greatly reduces memory/storage usage by streaming images from the zip.
It’s hard to determine exactly how much memory and storage is required so we haven’t adjusted the prerequisites section from 2GB free memory and 32GB free storage yet. It never needed anywhere close to 32GB but sites can only use a fraction of free storage via a complex formula.