A friend gifted me an old Xperia X with SFOS 2. It seems to be single SIM, I think so because only one IMEI number is shown in settings.
Can I reflash this device with the currently available flashing file from Jolla Shop downloads?
“Sony Xperia X, dual SIM** (F5122) *Sailfish OS 4.6.0.15, last supported version”
If not, is there a chance to get the last flashing file for the single SIM version anywhere?
Don’t know whether you have come across this thread?
https://forum.sailfishos.org/t/xperia-x-f5121-reflash/22775
I am not quite certain whether @hennsch is offering a workaround for this issue or not in explanation. If you have purchased a license for F5121 in the past then it would appear to be still available.
Hi!
I have good news and bad news.
You can install the operating system, but only step by step. All stop releases must be installed individually, according to the increasing version number, in Developer Mode from the command line.
That was the bad news.
I managed to do it a bit more then half a day.
That was the good news.
For this, Jolla provides all the information, at the cost of some search.
What is a stop release?
See this resource for explanation: https://docs.sailfishos.org/Support/Releases/
On the device is currently installed SFOS 2.1.4.14 .
After entering my Jolla account cred’s into a new Jolla account on the device, it was accepted and offered me to download Jolla software. → works
In Settings - Updates - Search for updates it tells me that device is up to date.
What should I try now? Any ideas? Thanks for any help!
edit:
ssh login + root login from computer works.
copied Storeman Installer onto the device, but it reports “problems on installing” when trying to install.
Jolla shop works!
Manual update to next stop release.
How to do this when device says it’s up to date?
With some CLI commands? ssu re…? pkcon refresh?
yes. if you didn’t log in with an account that has a license for this phone with this imei then it is the only way to update
but you can use sfos-upgrade to automate that for you and even offer you a stop release if you set a version too high sfos-upgrade | OpenRepos.net — Community Repository System
Thanks @smatkovi !!! Works! 
updating now.
@aspergerguy Thanks for the list, it was very helpful for first experiments for updating with sfos-upgrade!
edit: Strange, entered sfos-upgrade 4.5.0.25 and landed on 3.2.0.14.
edit: on 3.4.0.24, failed at post_sfos-upgrade, it reported:
Fatal error: Medium not attached: plugin:/ssu?repo=adaption0
second try: Schwerwiegender Fehler: Medium nicht angeschlossen: plugin:/ssu?repo=jolla
I don’t see any explanation on that page about what stop release means.
Am I missing something?
I have this archive file in one laptop. I could send it to you, but likely not before june.
I flashed my Xperia X single sim with it, latest version supported. You may also need to install an RPM for the hotspot to work (known workaround), since hotspot fails since 4.6 or so on Xp X.
I still have these versions on my hard drive and could upload them somewhere.
Sailfish_OS-Jolla-4.0.1.48-f5121-0.2.2.42.zip
Sailfish_OS-Jolla-4.6.0.15-f5121-1.0.0.12.zip
Device works again! Thank you all for helping me! (Reflash was possible and successful)
a stop release is a release that must not be skipped when upgrading. so basically you upgrade from stop release to stop release and at the end to the newest release