dann weiss ich leider auch nicht mehr weiter ;-/
bei meinem IPhone 3G FW201 hats nach folgender Methode aus dem scummvm-forum funktioniert
(über Cydia installiert und Games unter /var/mobile/ ...), hatte zuvor auch den Effekt mit dem Rückspringen auf den Start-Screen.
Plexar
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NOTE: If you're on firmware 2.0, look at the following link and ignore the below (except the instructions for game installation):
http://forums.scummvm.org/viewtopic.php?p=37758
* Jailbreak your phone and install Installer.app (Look here for instructions)
* Add the Community Sources package (Install, find the Sources category)
* Hit Install again, find Games in the list, and hit ScummVM. Then click Install. And you're done Smile.
If you want to install ScummVM itself directly, without using Installer.app:
* Download the latest release .zip file from our downloads page.
* Extract it somewhere on your PC.
* Using one of the below mentioned SFTP programs, upload the ScummVM.app directory you just extracted, into the /Applications directory on your device
* If you're doing this on Windows, you may have to SSH into the phone (I recommend Putty), using the above username and password, and do 'chmod 755 /Applications/ScummVM.app/ScummVM'
* Then reboot your device, and ScummVM should appear.
To copy the game data files over to your device:
* Install an SFTP client (For Macs, Cyberduck is good. For Windows, FileZilla should do the trick).
* Connect your SFTP client to your iPhone/iPod using the IP address the device shows in its network settings (Hit Settings, then Wi-Fi, then find the network you're connected to). The username is "root" and the password probably "alpine".
* Make a subdirectory on your phone under /var/root (or /var/mobile for firmware versions 1.1.3 and above), and upload the games there (don't place them anywhere else on the phone, as you'll be filling up the smaller system partition then).
* Make sure these files and directories have the right permissions set! You're uploading as root, all the files need to be readable by the 'mobile' user as well.
* When you've uploaded all the games you want, start up ScummVM and add the game(s) there (navigate to the same directory you added them).