i have a 3g iphone with his last possible OS 4.2.1. After update of this app is not possible use it. How to download and install the old correct version?

10 lat temu • Ostatnio zmodyfikowane przez 10 lat temu • 0

i have a 3g iphone with his last possible OS (4.2.1). After update of this app is not possible use it. How to download and install the old correct version?
Many thanks

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