@ansebovi when i try your method, i open the kamometool and this is what happens when i press 2: my systemui stops working and i get two errors like device unauthorised. I think its because of the systemui.apk and systemui.odex
.i deleted mine, can you post the default ones for 4.3
Sent from my C2004 using xda app-developers app
go to development settings,revoke usb debugging,..then connect to pc,,see ur phone click yes...
then try....and if u want stock,...do u have ftf of 4.3?
if u have then extract system.sin from ftf using winrar,
open flashtool...tools/sin editor and browse the file..then click extract data..wait for 5 min...u will have system.ext4
then use ext2explorer from here
open it...it will show warning...ignore it...now browse system.ext4 then extract it...