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I do not know much about Blackberries since am more of an android guy.
The update the mention is for the firmware and new programs for the phone.
Firmware updates cannot be applied to Black Berry devices from Ubuntu, so the answer to your first question is 'No, it cannot be done'.
RIM, makers of the Black Berry, have decided to support Windows and Mac only.
Once you do so, you should see a “Check for Updates” button here.
You can use Black Berry® Desktop Software to look for and install updates on your smartphone.
BBM gives you more control with two features that are now free and unlimited to use.
By setting a timer you can choose how long contacts can view messages and pictures you share.
Whatsapp not working on my 9930 tried changing the year to 2016 it will tell me to change my date setting or tell me is an old version of whatsapp.