Jailbreaking and installing appsync 4+

There no any solution to use the updated apps like Facebook, Viber etc. So lets install old apps. like Facebook 4.1, Viber 1.0.1 etc.
         
       For this you need to jailbreak you device and install appsync as per your respective firmware. For example: IPod touch 2g on 4.2 uses appsync 4+.

Instructions:
1) Jail breaking:
       *Install iTunes
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       *Then you'd require red snow 0.9.15 b2
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       *Then open redsnow
       *Click Jailbreak
       *Turn off your device
       *Click next
       *Hold power button for 2sec, without releasing power button press home button for 9sec,        and release power button without releasing home button for 15 sec as said in red snow. Check cydia and may be battery percentage. after 5 mins in your phone jailbreak is done.
2) Install appsync 4+:
       *When your phone restarts after successful jailbreak, you'll see cydia icon in your screen.
       *Open cydia and let select that you're a developer and next.
       *Then let the cydia load and then go to Manage>Source>Edit>Add
       *Add: http://h7v.org/
       *Let cydia load all resources. Then search for appsync 4 and install it.
       *All done. Now you can add non signed apps to you I device
(Note: Tested on iPod touch 2g and iphone 3g successfully.)