
Custom devices can be added by entering 'Manual ECID.'.
All users: Disable Skype while running TinyUmbrella. Windows users: Disable IIS (see for more info). Disable Web Sharing (System Prefs -> Sharing -> Uncheck Web Sharing). Mac users that just cannot get TinyUmbrella to work properly - Install TinyUmbrella to your /Applications directory then run /Applications/TinyUmbrella.app/Contents/MacOS/umbrella-tool from the Terminal. Fixing your permissions can help with the 255 error on startup. TinyUmbrella needs admin privileges to listen on port 80 and to change your hosts file.
If Cydia returns only some of the SHSHs you desired, it is because Cydia does not have the others.
In addition, TinyUmbrella can also preserve the baseband on iPhone 4 (iPhone3,1) devices.