I'm getting my new Xperia Z2 (SO-03F) from DoCoMo. It's great but I cannot bear it without root.
After I Googled a ton and read many posts on xda, I finally knew these things:
1. root requires unlock (currently)
2. unlock will lose DRM keys (unless backing up them)
3. backup DRM keys needs root
So I'm falling in an infinite loop. How to root my device WITHOUT lossing DRM Keys? Maybe an root exploit should be found for us to backup TA before unlocking?
I think we should make a HOWTO guide of all the procedures, for the newbies (like me