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Diffstat (limited to 'static')
| -rw-r--r-- | static/faq.html | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/static/faq.html b/static/faq.html index fff7f1a9..98d6e868 100644 --- a/static/faq.html +++ b/static/faq.html @@ -719,19 +719,27 @@ time zone automatically" toggle.</p> </li> <li> - <p>On devices with a Qualcomm baseband (which provides GPS), when location - functionality is enabled and being used, - <a href="https://en.wikipedia.org/wiki/GPS_signals#Almanac">GPS almanacs</a> - are downloaded from https://xtrapath1.izatcloud.net/xtra3grc.bin, - https://xtrapath2.izatcloud.net/xtra3grc.bin or - https://xtrapath3.izatcloud.net/xtra3grc.bin which are currently (as of - September 2020) hosted via Amazon Web Services. GrapheneOS has modified all - references to these servers to use HTTPS rather than a mix of HTTP and HTTPS. - No query / data is sent to the server.</p> + <p>HTTPS connections are made to fetch <a href="https://en.wikipedia.org/wiki/GPS_signals#Almanac">PSDS information</a> to assist with + satellite based location. These are static files and are downloaded automatically + to improve location resolution speed and accuracy. No query or data is + sent to these servers. These contain orbits and statuses of satellites, Earth + environmental data and time adjustment information.</p> + + <p>On prior generation Pixels with a Qualcomm baseband (which provides GNSS), + almanacs are downloaded from https://xtrapath1.izatcloud.net/xtra3grc.bin, + https://xtrapath2.izatcloud.net/xtra3grc.bin and https://xtrapath3.izatcloud.net/xtra3grc.bin + which currently (as of April 2022) are hosted via Amazon Web Services. Unlike AOSP, + GrapheneOS has modified all references to these servers to use HTTPS rather than + a mix of HTTP and HTTPS. We plan to offer the option to download these files from the GrapheneOS + servers, but we'll retain the option to use the standard servers to blend in with other devices.</p> + + <p>On 6th generation Pixels with a Broadcom GNSS chip, by default almanacs are downloaded + from https://google.psds.grapheneos.org/lto2.dat, https://google.psds.grapheneos.org/rto.dat and + https://google.psds.grapheneos.org/rtistatus.dat which are the GrapheneOS proxy servers + for the standard servers. Alternatively, the standard servers can be used which are + https://agnss.goog/lto2.dat, https://agnss.goog/rto.dat and https://agnss.goog/rtistatus.dat + which currently (as of April 2022) are hosted via Google Cloud Platform.</p> - <p>We plan to offer the option to download these files from the GrapheneOS - servers, but we'll retain the option to use the standard servers to blend in - with other devices.</p> </li> <li> <p>Connectivity checks designed to mimic a web browser user agent are performed |