IBM really don’t seem to get how to do software for Linux. The current process is to download a tar file and extract a .deb from it (which is like putting a .zip inside a .zip) and then install it as a standalone deb so you have to manage your own updates. The right way to do it is for IBM to host a repository. Really IBM it isn’t hard and here are the instructions. Downloading stuff from websites to install is something that Windows users do, it is an obsolete process. Anyhow, error 2 in the packaging is that it is only targeted at the i386 platform (which is nearly all the 32 bit intel architecture processors from the 386 onwards).