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Open the Cydia app, then tap 'Manage', then tap 'Sources', then 'Edit'. Now tap 'Add'. Entre that URL you've got, then once it's verified, tap the Source you've added and the App should be in their.
 
Open the Cydia app, then tap 'Manage', then tap 'Sources', then 'Edit'. Now tap 'Add'. Entre that URL you've got, then once it's verified, tap the Source you've added and the App should be in their.

Awesome help
 
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