Error messages when updating iphone
The i Tunes error 9006 is usually an error that you may encounter when downloading purchases, updating or restoring your i OS device.This message appears when i Tunes fails to restore your i Phone or i Pad because it cannot connect well to the Apple servers.
Therefore, it is best to wait for a few hours or days before trying again, as the load on their servers will be reduced.
If disabling software firewalls and anti-virus program did not help, you could try the next solution which is updating your i Phone or i Pad using IPSW file.
This solution lets you switch between i OS version without too much hassle as long as you are comfortable using it.
Otherwise, follow the steps below to download and install i OS 12 using IPSW: Step 1: Go to our download page to download the i OS 12.4 IPSW files for your device.
Make sure that you download the correct IPSW file that corresponds to your device model.
This stops i Tunes from downloading the IPWS file required to finish the update process.