How can I manually install legal apps on a jailbroken iPad?
Location for your legal iOS .ipa app backups on Windows:
C:\Users\User Name\Music\iTunes\iTunes Media\Mobile Applications
(adjust your path accordingly)
Location for placing* your .ipa backups for installation on you iPad/iPhone/iPod:
/private/var/mobile/documents/installous/downloads/
*DiskAid is helpful in placing the .ipa files in the appropriate location.
last portion via jailbreak – How can I manually install applications on a jailbroken iPad? – Ask Different.