Update PSDS information

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