Was it worth it? Maybe.
The time spent doing this could have been spent on a billable (or freelance) project that would have paid for a new phone (and then some).
Actually the time spent could have been used to try to find a freelance project, I'd say he would be lucky to get a freelance project and complete it in the time it takes to upgrade his phone with a custom rom after using an exploit to gain access.
I've rooted my phone but not upgraded it and it took me about half an hour to do it in total. I got my last windows mobile phone to duel boot android in a similar amount of time. It doesn't take effort or skill, usually someone else does most of the work and your just following their instructions. The people that learn how to do the actual hacking and actually create the custom Roms are learning skills that could be useful on future projects if they continue to work in the Android area since they will learn a lot about different parts of Android.
I think the problem is with the teacher not the education system. We learned a lot of things on our Maths course that weren't on the course because we had a good Maths teacher.
In saying that the teacher I had before that was terrible and used tricks he taught himself to get through teaching how to do a problem meaning you learned the trick, not how to solve the problem.
And he was the honors teacher... So I dropped to Ordinary level after a year and learned less maths properly and caught up in college on my own time to get through the course. Really though, it is over 50% the teacher and then we can talk about the intelligence of the pupil. If I can go on to college and do maths that was on the honors course at secondary school/high school, only two years later, then I don't think the problem is me.
I think it is ridiculous when some people claim, it is the pupils and not the teacher. It is high school/leaving certificate Maths FFS!
He who has but four and spends five has no need for a wallet.