Hi all, I used Z4 root (1.1.0) to root my Samsung Galaxy I9000, and proceed to use OCLF from RyanZa. this worked fine and I got the Superuser icon. Yesterday, having heard rumor that KIES already release 2.3, I undo the lag fix and without removing the EXT2 tools, I tried to get a firmware update through KIES. It did update my phone but the version is still 2.2 this is what it looks like after the firmware update Model Number GT-I9000 Firmware Version 2.2 Baseband version I9000DXJPB Kernel Version 188.8.131.52 root@SE-S604#1 Build Number Froyo.DXJPE PDA I9000DXJPE CSC I9000OLBJPA PHONE I9000DXJPB Build Info: 2010. 12 I then tried to root it again, because I can't stand the lag. I've tried these methods: Z4 Root ([APP] z4root - xda-developers) doesn't work One Click Root (How to root unroot Samsung Galaxy S i9000 easiest way one click Tool) doesn't work as well Copy an update zip (Detailed guide on rooting the Galaxy S - Samsung Galaxy S Forums - Galaxy S II Forum) doesn't work as well. For method 2 and 3, I got a message that verification failed. Any advice on this will be much appreciated!