Not the latest but some instructions and the 5.0.0.43 image: Fastboot flashing of Jolla C2
It is then just a matter of updating to latest after flashing.
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No issue for me on Xperia 10 III with FDroid
Something has been changed in the “Volume” and “Ring Volume” settings for Android apps. Previously when for example an Android browser was open, the physical volume buttons on my 10 II would adjust Volume instead of Ring Volume, but now on Tampella, the physical volume button adjust Ring Volume by default and Volume only when an audio/a video is actually playing ie. sound is happening.
On Sailfish apps, like Sailfish Browser, the physical volume buttons adjust Volume, like they have done previously.
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Crash of voicecall-manager that make calling impossible has been caused by “Personal Ring Tones”.
I have uninstalled it (devel-su zypper rm personalringtones), and calling is working again.
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I see that the most reported problems are for O2 germany.
I’ve done some test with sending and receiving SMS.
Both work if the phone settings for mobile data have 2G selected during boot.
Otherwise (4G and 5G) sending and receiving didn’t work.
- Sending SMS when setting is ‘4G/5G preferred’ reports an error.
Setting the value to 2G and restart sending is suffice to send the SMS. - Receiving SMS only works when the value was set to 2G at boot.
Setting value to ‘4G/5G preferred’ stops working and could only be solved with setting the value back to 2G and rebooting the device.
I tested it on a FP4 with version 4.6.0.16 and the SailfishOS port from @mal. So it seems that the problem came with the switch to the (my new) ‘5G SIM’ from O2 germany which i received last week.
The older (4G?) SIM i head from 1&1 works without a problem - i think 1&1 changed the vendor of the SIM cards to switch to 5G.
Did not know what changes the new SIM forces on the phone 
…
you can change that with the mce tool
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It’s no biggy for me as such, I can always use the digital sliders on the Top Menu. I half mentioned it only because someone above was having problem with getting sound out from the player apps, just in case the issues might be connected.
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Now MicroG works quite well and I could install Teams and its dependency on MS Intune without any problem!
Really easy! Cool! No hack needed!
Btw: Have you experience with banking apps on C2? Are they working without fingerprint sensor?
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It really depends on the banking apps themselves.
Updated Sony Xperia 10 II to Tampella 5.0.0.55 → Whisperfish can send messages but does not receive them any more, no matter which internet data option is selected.
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Is there the possibility to start the browser automatically in private mode?I didn’t find anything in the About Config…
set “browser.privatebrowsing.autostart” to on/true.
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no effect on xperia 10v…
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No problem here (same config)…
Edit : sorry finally, same issue (Whisperfish can’t send messages on 10ii SFOS 5.0 55)
Nope, i have sometimes issues with to switch to bluetooth. But sound is there always
One thing I noticed after the update is that the boot process seems to take longer. Especially the time interval between entering the encryption code and the PIN of the SIM.
In the 4.x it took no longer than 5 seconds, whereas now it takes 15 seconds or more.
Anybody noticed that? Is there a logical reason for it?
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What did I miss, or is there something fishy with my C2?
Checking Coderus sailversion site, it says, 5.0.0.58 - Tampella - 07 Feb 2025.
My C2 phone says updated on 5.0.0.55, so… ? 
My guess: Bug hammering will resume on Monday.
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What? Did they contract some snail postal service? 