android

Nexus 7 – install old android version 4

 in Linux / Mobile  tagged android / linux / tablet by

Our Nexus 7 (first version) was super slow since it was updated to android version 5.x so I decided to install version 4.4.4 which is the latest version before version 5. I tried to downgrade by the instructions supported by Google but it did not work and I have to call some additional commands. See solution section. Hopefully the tablet is a little bit faster with version 4.4.4. Before I started I have to enable USB-Debuging in the Developertools on my device. Link to the Google factory images: https://developers.google.com/android/images#instructions Problem I called the following command as recommended in the instructions: ./flash-all.sh Result (quite […]

Syncing images from android smartphone to raspberry pi

 in Linux / Mobile / Raised bed  tagged android / backup / configuration / rsync / weekly picture by

I was looking for a solution to backup the photos taken with my smartphone to our raspberry pi. Android side I searched for synchronization apps and ended up using rsync as backup tool. Therefore I installed the app ‘Rsync Wrapper‘ on my smartphone and configured it with the following parameters: Source: /storage/9C33-6BBD/DCIM/Camera/ Destination: martin@192.168.2.106:~/photos/handy-samsung-s7/ Option: -r –ignore-existing –progress -e “ssh -l martin -i /data/user/0/net.letscorp.rsyncwrapper/files/06a73f67-6234-40e7-81de-7add8fa4c783.key -y” I removed the –verbose parameter and added the –ignore-existing parameter. The –ignore-existing parameter was added by me because the synchronization took up to twenty minutes where the most of the time was used to check which files are […]