[Q] Xperia SP Unblocking Bootloader and Rooting
I have an Xperia SP (12.A.1.201, LOCKED
bootloader). I want to root my device but rooting requires unlocked
bootloader I need to preserve the DRM keys
According to [Tutorial] Xperia SP Bootloader Unlocking/Relocking
), I need to ROOT
my device first to backup the DRM keys but then as per [RECOVERY] CWM-Based Recovery 22.214.171.124 + ROOT for Xperia SP 
), I need to UNLOCK bootloader first.
Quite confusing. What needs to be done? I need help.
I cannot lose my DRM keys.