Well first you will have to change the SystemVersion.plist located in /System/Library/CoreServices. You need to change the 1.1.4 to 1.1.3 and overwrite the original. Reboot. Summerboard should install just fine. Customize on the other hand is a bit harder. First, download the normal version, and let it do the soft reboot. Then add this source: www.touchrepo.com/repo.xml and uninstall the version of Customize you already have, then install the modded version from that source. Everything but the carrier logo part should work...
I don't know where to go to change the SystemVersion.plist? And when it come to customize when I try to install customize it gives me the error "This version of Customize requires Firmware 1.0.2"
I don't know where to go to change the SystemVersion.plist? And when it come to customize when I try to install customize it gives me the error "This version of Customize requires Firmware 1.0.2"