CWM 6.0.3.0 can't flash a KK rom, you need at least 6.0.4.5 for it. I've just answered your question in Mackay Omni thread 5min ago and wrote you what to do:Hi! I was using GamerzRom ICS 4.2.1 w/ Devil Touch Recovery v6.0.3.0 and tried to install several other roms without success. I tried several KitKat (CyanogenMod, CyanAOSP, MackayOmni) and JellyBean (CyanogenMod Stable) without any success. I always get Satus 7 error. Can someone tell me which part of this guide is suited for me (or maybe some other guide)? I've spent 4 hours around this with no success so any help at all would be greatly appreciated. Thanks in advance!
Easiest way: backup all your data, flash CM10.2 according to the OP instruction (to get the new partition size and recovery for flashing KK) reboot to CM10.2 and then back again to recovery and then you can flash any KitKat ROM.
CM10.2 will warn you after first attempt that the system partition size must be reformatted, so you have to choose again CM10.2 zip to install it. Second time it will work. All your data from system folders (like /download) will be erased, but not your data on storage section.
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