The standard way of rooting is to use a custom recovery to install a SuperSU zip, which not only contains the SuperSU app itself, but also proper binaries and tools. Luckily, this unloved device still has a custom recovery available in this XDA-Developers thread.
Install the CWM package via Odin, then install SuperSU from it. Don't bother with the build.prop and custom ROM mess, those are for another purpose.
I was helped by @Andy's answer and I wanted to add more details about the rooting of the Samsung Galaxy Young 2 (SM-G130HN). Bebs
After the first steps described in the question, I had to try another rooting method. I found one in this post How do I root my Android device?, and the ont that worked is
I had to download it from my hpone because my PC navigator detected a troyan. It indeed worked with one clic.
At this moment, I still could not use SuperSU --the one dowloaded from Google Play--, my phone was seen as rooted, but there were a problem with SuperSU.
I learned from this page I could manually install another SuperSU package but first I had to allow my phone to be CWM.
- Download CWM.
- Start Odin.
- Start the phone in Download mode by holding Volume Down, Home and Power. Plug the phone via USB to the PC.
- In Odin, check AP and browse to CWM.tar file. Click Start.
- Rebbot the phone (in my case it rebooted itself).
Now your phone can be CWM.
- SuperSU.zip file can be downloaded here.
- Store the file into a mini SD card, and plug the card in the phone.
- Start your phone in CWM by holding Volume Up, Home and Power.
- The the menu is clear and you can install the zip file.
- Then browse in the menu to reboot the phone.
Now SuperSU works.
I also finally could remove crapy bloatware with Titanium Backup.