Hi, couldn’t find a topic for this particular app yet, so here it is… Has anyone been able to download and install Finnair Visa application from Aurora store or other sources?
Yeah, using it since some years I think (from Aurora), no obvious issues (although pretty light usage). Works for me without microG / anything.
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Is there a way for you to send me the APK file? Couldn’t find it anywhere available as Aurora store fails to download it
No idea, I don’t know anything about things Android. Should the APK be somewhere on my phone, ready to be sent?
I am ready! If you can find the file, I would appreciate a lot <3 Would you prefer public download link here so that everyone can get the file or do you want to send it to email for example?
You can use apk extractor app
I have used this one time: https://play.google.com/store/apps/details?id=com.ytheekshana.apkextractor
(its not great privacywise, but it worked)
It gives option to share files?
No, it produces apk file from an installed app. Then you can share like any file via different service
Thank you for the hint! If I understood correctly, I could use my android phone and with that app to get the APK file which I could then install to my SFOS device?
Yes, should work. At least if your devices both run the same version, but probably you don’t have 32 bit device?
Have to try this hack! Thank you so much for the hint <3
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Got the APK out, but unfortunately it won’t start after the install 
Have to thinker more tomorrow. If @Mazoon can one way or another provide functional APK, maybe that would work
@Mazoon was super kind and send me his working version of the app! Unfortunately app behaves the same way still. That just got me thinking that we might have same problem here as with the OP-mobiili app Finnish OP-Mobiili - #21 by avhakola .
@domo141 as your easy to comprehend guide helped me with OP-mobiili app , could you or someone who understand command line tool help me by confirming if following commands would make sense to try?
devel-su sh -c 'echo kernel.yama.ptrace_scope = 0 > /etc/sysctl.d/92-finnairvisa.conf'
devel-su sysctl -w kernel.yama.ptrace_scope=0
Or should it have the same effect only with the second command if it would work?
Please do it like this:
devel-su
You should now be in a root CLI.
echo "kernel.yama.ptrace_scope = 0" > /etc/sysctl.d/92-finnairvisa.conf
Be aware of the quotes (this is also explained further down in the link you shared). The ones I posted now above are the correct ones.
Reboot.
But I have to add, there is no explanation what this magical incantation does or how it helps with certain android apps.
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Thank you so much for the help! One thing I am wondering is, if I delete the installed Finnair visa app, will it also delete that .conf file? Or do I need to delete it manually? Thinking just in case if that doesn’t help
No.
And good thinking; always keep track of manual tweaks.
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Just what I thought, is there way to find the .conf file manually from somewhere, or do I just need to remember it and delete through command line one day if I want?
You need to remember it.
I don’t know whether the same works for Finnair Visa, but for the commands:
the devel-su sh -c 'echo kernel.yama.ptrace_scope = 0 > /etc/sysctl.d/92-anyname.conf'
configures system to do the setting in every reboot, and
devel-su -c 'sysctl -w kernel.yama.ptrace_scope=0'
does that configuration at the time of execution
so, you can try the latter before running that android application
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Just to inform if anyone else is interest, 5.0.0.73 update or something else fixed this app for me. Updated from Aurora (which only gave error before) after the OS update and suddenly the app launches without problems. I guess it didn’t like Android 11 anymore, but don’t have any proofs. Just happy that only app that didn’t work, works now also 
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