So, i had some fun with Jolla and Alien Dalvik over the last 2 days, maybe some of you are interested...

Android apps are stored in /data/sdcard
every Android app creates it's own user , something like 10011, 10020, 10025 and so on...

some apps create files with createmask like 600, so that only this app can read and write that files.

I installed Locus Pro for example (btw: androidpit is a great place to get paid and non-paid anroid apps) and then tried to install Locus Map Tweaks to get more maps, but it failed without an error message.

As you can see above, every Android app has it's own user and one app has no right to write into other apps folders.

so, i logged in via SSH and did a
... and everything worked.

yes, i tried with 775, but it did not work...