This is from xzero guide: Deleting stub IOS's Run Any Title Deleter DB Choose IOS36 & press A. Go to System Titles & press A. Select IOS222 & press A to delete. Select IOS223 & press A to delete. Select IOS249 & press A to delete. Select IOS250 & press A to delete. *If any IOS listed above is not there, check the other pages. If it's still not there, do not worry about it & move along with the guide. Installing cIOS & Patching the System Menu IOS Run WAD Manager 1.5 When it opens choose IOS36. (it is probably already set to that) Press A to leave NAND emulator disabled. Press A to open from SD slot. Install IOS70-v6687.wad Install IOS202-v4.wad Install IOS222-v4.wad Install IOS223-v4.wad Install IOS249-v14.wad Install IOS250-v65535.wad Press home to exit. But.. i have a feeling that, when i install IOS70-v6687, that it will lead to a system corrupt message, and then im screwed if i dont got preloader (since it REINSTALLS the system menu) Any help at this problem?