Finalmente....
appena uploadato su XDA:
Android 5.0 L for Z3 - Pg. 153 | Sony Xperia Z3 | XDA Forums
MEGA link to 23.1.A.0.690 Nordic NCB FTF for D6603
https://mega.co.nz/#!SVp2wJBD!iQLmEF...LMKEjl-stLRiO0
D6603_23.1.A.0.690_Customized BAL
-prerootet with SuperSu2.46
-lockeddualrecovery2.8.3
-signed
https://mega.co.nz/#!SVp2wJBD!iQLmEF...LMKEjl-stLRiO0
Mi raccomando fate sempre prima un backup.