I just wanted to post to all about the error “Invalid IPA”, when downloading an app off of installous. If you are experiencing this error, its caused by one of two reasons.
1. The ipa file is actually corrupted.
2. You know the ipa file isnt corrupted but, installous (or some other downloader) tells you that it is.
The FIX
Go into installous. Add the source “sinfuliphonerepo.com” and go through their source and get yourself APPSYNC. You want to make sure you download the one that corresponds with your iphone’s firmware. This is just a fix that will do you wonders. Comment if you need any more help on this topic
UPDATE 08/04/10
If you are on iOS4 Make sure to get the AppSync 4.0 
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UPDATE 10/15/2010
With the new jailbreak, we thought we’d open discussions on the forum.
http://www.appfaction.com/forum/showthread.php?p=2877#post2877
15. September 2011 at 11:09 AM
please send me
steps by steps. really need help. tqq
15. September 2011 at 3:55 PM
I have an iphone 4 and have installous 4 .. i try to download stuff and it says invalid ipa?? i had try for many ways,reinstall still the same,can u please email what should i do?
16. September 2011 at 6:16 AM
It works , thanks G
17. September 2011 at 9:46 AM
it worked… thank you man u r the best
18. September 2011 at 10:02 AM
I’ve tried it and I apparently already have that crack when I got my installous 4 and it still gives me the error
19. September 2011 at 11:39 PM
Thanx, I’ve tried it and it works!
I already had the “AppSync 4.x+” (JailBreak 4.2.1) but the error keep coming but when I installed the “AppSync 4.2″ then the installation went fine on all apps from Installous 4.
20. September 2011 at 12:31 PM
I installed this but it didn’t worked please, I bag you cause I’m
Desesperate send me an email to help me out
My email: noahh@arrakis.es please help me
24. September 2011 at 7:14 PM
Having the same error… I have a iPhone 3GS and installous 4
26. September 2011 at 9:31 AM
Easy….. go to cydia > manage > Scources > Hackulous > Appsync4.0+ > modify > reinstall It is solved. Bye guys!!
Viva Palestine & Algeria.
30. September 2011 at 7:13 AM
you rock farouk!!!! tnx a lot!!!
30. September 2011 at 8:54 PM
can you send me step by step instructions cause how do you add a source
4. October 2011 at 10:07 PM
it will not work it still says invalid ipa
10. October 2011 at 9:23 AM
Worked for me running 4.3.5
Thanks!!!
20. October 2011 at 6:19 AM
it doesn’t work whit me it says : size mismatch what do i do?
20. October 2011 at 2:09 PM
hi there when i try to download apps thru installous….is shows error IPA
what do i do?
20. October 2011 at 9:02 PM
i am using iphone 3gs with ios 5 , installous 4, some of my download file have invalid ipa prolem , some file downloaded can be installed some can not ( come up with invalid ipa ) how to fix ?
23. October 2011 at 3:51 AM
I tried typing in the website “sinfuliphonerepoco” but where do i have to type it in, the internet or intsallous??????
IM SO CONFUSED!!!!!!!!!
25. October 2011 at 11:36 AM
Hey there, I have an Ipod touch 4.2.1 and I have the same problem !! What can I do??? HELP!
25. October 2011 at 11:56 AM
Thanks man worked
31. October 2011 at 8:50 AM
How do U put in a new source Please need help
31. October 2011 at 9:01 AM
How do U put in a new source? Please need help.
31. October 2011 at 9:21 AM
So I downloaded sinfuls’ appsync and it took installous away saying that installous had a requirement dependency to appsync. Why won’t it work for it? its Installous 4 (compatible with ios 5) and currently have sinfuls’ appsync 5.x+ ( most recent version so I figure works with ios 5?)
2. November 2011 at 1:10 PM
go to cydia and go to sources
push edit and add the source there
then download appsync for your software
ur welcome(x
5. November 2011 at 5:30 PM
dint work for me 4.3.5 :/
6. November 2011 at 12:16 PM
Aye it wont work it keeps saying the same thing can you send me the instruction 1 by 1 please
Fatkidscrew@yahoo.com
6. November 2011 at 3:55 PM
thanks man worked for me
8. November 2011 at 4:22 PM
Easy….. go to cydia > manage > Scources > Hackulous > Appsync4.0+ > modify > reinstall It is solved. Bye guys!!
14. November 2011 at 8:01 AM
Hi i dont get what you have to do can you please help this is really complicated snd i dont get any thing if you can help me please send me an email on baneeni2000@hotmail.com
23. December 2011 at 12:21 PM
ive tried everything you can think of its just fucked up
23. December 2011 at 2:14 PM
to add a new source go to cydia -> manage -> sources -> edit -> add ->
type in ‘’sinfuliphonerepo.com ”
Your Welcome. Goodluck!
15. January 2012 at 3:06 AM
uhhhhhhhh! EVERYTHING GOT DELETED WHEN I DID THAT!!!!!!!!! >:(
15. January 2012 at 3:44 PM
it uninstalls installous aswell
16. January 2012 at 10:57 PM
DO YOU REALLY WANT TO INSTAL IPAS ON YOUR IPHONE BY INSTALLOUS JUST TURN OFF YOUR WIFI AND TRY WITH 3G IS NOT WORKING WITH WIFI ANYMORE, MAYBE IT’S A WAY TO STOP A LITTLE BIT THE TRAFFIC ON THE SERVERS
28. January 2012 at 7:00 AM
my iphone 3G problem with ipa please solve me for crack ipa to install it.
4. February 2012 at 5:34 AM
thanx a lot mahn , it worked out on my iphone 4 .
4. February 2012 at 7:41 AM
If everything gets deleted, just reboot and it will be back. Happened to me as well..