You are in the following case: travel / vacation you have a backup of your files "ipa" on hand, but not your PC that the iPhone is normally synchronized. And lack of pot, you need emergency restore an application that you accidentally deleted from your mobile phone. No need to install iTunes to authorize the position (given that the maximum number of authorized positions is limited to 5) and you type any syncing your iPhone, there are simpler:

The method is as follows:

• If you have not already, start by installing "installous" via Cydia (add http://cydia.hackulo.us source)
• If the application you want to install is present in the lists of the application Installous, the rest of this tutorial does not apply
• Using a client sftp (default login: mobile password: mobile), transfer the file on your iPhone in ipa directory "/ private / var / mobile / Documents / Installous / Downloads"
• Check the rights on the files are:
  • owner: Mobile
  • group: Mobile
  • permmissions:-rw-r - r -
  This gives for example (ls-l command line):
  -rw-r--r-- 1 mobile mobile 567305 Aug 21 05:42 monappli.ipa