It looks like the EFS file system or the partition containing the non-volatile data set by SUPL patcher on the Xperia 10 Mark 3 ONLY is restored at boot time.
- TLS certificates uploaded to modem filesystem are wiped after each reboot
- SUPL version setting is restored to v1 if previously set to v2
- GPS almanac and ephemeris data cached on the phone is wiped, too
Now I’m wondering if this a new feature by Sony to wipe (restore) the EFS data partion on every reboot (this wasn’t the case for Xperia X, XA2, 10 I and 10 II) or is SailfishOS restoring something maybe related to VoLTE testing?
If it’s Sony doing the “trick” then I’m wondering why the heck they remove cached data on every reboot and where the initial partition is located where the default data is stored…
UPDATE: Let’s ask Sony (https://github.com/sonyxperiadev/device-sony-lena/issues/15)