My Xperia Z is running 10.3.1.A.2.67 stock ROM.
An app I was trying to run has some mechanism to prevent running on rooted devices. I read somewhere and tried to circumvent this by renaming the /system/xbin folder. What I didn't realise is that cause my phone to lose root, i.e. SuperSU says "There is no SU binary installed..."
Now I tried to re-root using all the tools I could find (Doomlord, cubeundcube, Goroh_kun) but they all encountered a similar problem: /system/xbin/su: cannot open for write: No such file or directory. It seems that all the tools can't write file to the /system directory.
I also tried the unroot tool from http://forum.xda-developers.com/show....php?t=1886460, but it threw an error as well.
Can anyone shed some light into what's causing this, and how can I fix it?
Thank you all