my certificate was about to expire, so i revoked the old one from the ios provisioning portal and created a new one with xcode (everything worked automatically). After that i set the provisioning profiles to the new certificate within the ios provisioning portal and pressed the "renew" button within the organizer.
Now i recognized that if i want to use some old ipa (wich was signed with a different certificate) i cannot install it on the iphone (getting some message like signature is invalid or so). I've read that when you create a new certificate you should use the old private key. Unfortunally i dont know where the old private key is located (since i'm new at this project).
Just for clarification: if i would create the new certificate with the old private key, will the old ipa work or do i still have to create a new one with the new certificate signed.
And will there any complications when i decide to update my app within the apple store?
thx for help,
kuku