o thats a shame... i dont even rmb what ive deleted lol.. i guess i wait for 407 :laugh:
Or you can download and flash the 'Generic HK' 10.1.A.1.434 firmware, root it and then update OTA to 10.1.1.A.1.307.
[FTF] Xperia Z (C6603) 4.1.2 - 10.1.A.1.434 Generic Hong Kong 1270-5695 R11A Firmware
The only problem is: if you downgrade from 10.1.1.A.1.253 to 10.1.A.1.434 without wiping data, usually your phone gets stuck into a bootloop because of the 'NFC firmware update'. So, to downgrade, you would have to backup all your data and then flash 10.1.A.1.434 including wipe of all data.