Re: Please suggest me a way to upgrade my Samsung Android firmware on Ubuntu
Most Android phones, where there are updates available, can be updated through the phone without you having to even use a computer for any part of the process.
I try to treat the cause, not the symptom. I avoid the terminal in instructions, unless it's easier or necessary. My instructions will work within the Ubuntu system, instead of breaking or subverting it. Those are the three guarantees to the helpee.