After restarting several times and digging I found (was not obvious to me) going to the SDK Manager and going to FILE - RELOAD solved the problem.
Immediately the other uninstalled parts of API17 were there and I was able to update the SDK.
The Snap app also works on all other current Ubuntu releases.
Though it is Corebird 1.5.1 at the moment of writing, the snap will automatically upgrade to version 1.6 once it’s published into snappy store.
In this case, it's recommended to download the Eclipse Platform Runtime Binary from -- or a different Eclipse based bundle from your choice -- and install Li Clipse as a plugin using the provided update site.
GIMP 2.9.6 release highlights: Input your password (no visual feedback while typing) when it asks and hit Enter. Then upgrade GIMP from an existing release via Software Updater utility: or simply run commands to check updates and install GIMP: Kodi media center, formerly known as XBMC, reached the 17.4 release a few days ago with a bunch of bug-fixes.
It's possible to verify the SHA256 of the downloaded file in: Li Clipse 4.1.1 files SHA256.
Older versions may be downloaded from Media Fire (install instructions below for each platform).
Once updated to 4.2 then I could re-update to version 21 and voila.
Optional: How to enable Oracle Java in your Web Browsers Google Chrome Mozilla Firefox Community Q&A This tutorial will cover the installation of 32-bit and 64-bit Oracle Java 7 (currently version number 1.7.0_45) JDK/JRE on 32-bit and 64-bit Ubuntu operating systems.