I have a jailbreaked iphone 3GS with firmware 3.1.2 and I installed appsync 3.1 onto it (and reboot after installation).

Now I want to install Tomtom in the ipa-version

I copy it into the applications store in itunes and plug my phone in and I do a sync. Sync then comes back sync completed. Huh wheres my app? it does not show up on the phone yet it shows up in itunes. Am I doing something wrong?

Any solution? Or do I have to install OpenSSH??
THANKS!

I think you can try iphone pcsuite and see whether that ipa is shown in the installed list.

add source cydia.iphonecake.com
install appcake
now copy all installable file (ipa as well deb) to var/mobile/media/apcake/upload folder with ifunfox
itz finish now open appcake application go to task and you can install application from your mobile (which you have transfered instalable file to above mention folder)