I want to try Sailfish OS. If it proves convincing, I’ll go for a licensed version. So I bought a compatible device: an XA2 Ultra (H3213) that has been preowned and factory reset.
My problem is it has Android 8.0.0 installed and I should be having Android 9.0 before installing Sailfish.
So my questions are:
How do I switch to Android 9.0? And I guess I better should make a backup before doing so; how do I do this?
Notes: my knowledge in Android is limited. I have more easily access to Linux PCs than Windows. As per instructions, (1.1.4 olf / SailfishX on Xperias · GitLab ), I did not set any network capabilities on the phone.
Thanks for reading