I'm on 4.2.2 14.1.g.1.518 rooted with SuperSU (Telcel)
I downloaded Z1-lockeddualrecovery2.7.121-BETA.installer.zip
Ran it using option 1,
did the wipes, and when instaling zip C6906_kitkat.zip
TWRP turns the phone off while "copying to /system"
and boots up to 4.2.2 with no changes.
Is there any fix, I'm stuck with 4.2.2 14.1.G.1.518