Originally Posted by Alphos2000
Go to TW5.4 settings and change dock icons from five to four, and you will have icons like you want.
I finally manage to install it with Root Explorer, coping manually ShareApp.apk and TW4Launcher.apk files (setting system/app folder in Root Explorer to RW), deleting TouchWiz30Launcher also with Root Explorer and restarting the Phone, because I had error 6 too in recovery mode.
Great hints, thanks!
Update: can't seem to make it work. I followed your instructions, i'm presented with a new empty TW interface with the four more narrow buttons, but i can't find the extended TW5.4 settings anywhere. Pressing Menu, Change, only brings up the 7 (empty) homescrees plus one icon Delete....