Nexus 7 – install old android version 4

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: Problem I called the following command as recommended in the instructions: ./ Result (quite […]

Set up Zotero with own WebDAV space

Today I set up Zotero on my Debian (Strech) GNU/Linux PC at home. I installed the following debian packages with aptitude: aptitude install xul-ext-zotero libreoffice-zotero-integration Problem Firefox started with the new Zotero plug-in but when I tried to configure WebDAV for file syncing I received an error message which told me that my user name or password are invalid. This error message occurred when I tried to hit the ‘verify’ button. Approach My suspicion was that firefox is missing some WebDAV functionality so I compared the intstalled packages of a other Debian machine where it worked. I searched for packages which contain the […]