The error code is not the same because it may be because of different reasons.
How to fix this iTunes error?
kindly try the methods mentioned below.

As you know, iTunes is the default management utility for Apple devices, such as iPhone and iPad.
When By using it, people can manage their iOS devices on the computer conveniently.
However, problems may occur during this process.

We noticed an error recently:there was a problem downloading the software for the iPhone.
Many people are bothered by this problem and they are asking for help online.
There is a lot ofMiniTool softwareto help you get out of troubles like data loss on computer/mobile phone.

yo get the one suitable for your situation and follow the on-screen instructions to use it.
just note: In the fault signal, the symbol * represents the name of your iPhone.
#2. iTunes error 1671:
There was a problem downloading the software for the iPhone *.
The online grid connection timed out.
Requested resource was not found:
There was a problem downloading the software for the iPhone *.
The requested resource was not found.
How to Fix Error 9006 iTunes
just follow the steps below to fix error 9006 in iTunes.
How To Fix If Your iTunes Is Not Detecting iPhone?
Because of this, you should initiate the firewall and confirm phobos.apple.com or albert.apple.com is not blocked.
Step 2: connect to a different web link.
You may as well connect your gear to a different web connection to see whether it works or not.
Besides, you might change a computer to restore your iPhone or update apps if applicable.
Three: Troubleshoot your setup
The following methods work on both Mac and Windows computers.
Lets take the former as an example.
1stway: check Date & Time.
2ndway: remove the .ipsw file.
hey dont worry if you have deleted files by mistake.
You canrecover deleted files on PCandrecover deleted/lost files on Maceasily.
3rdway: update the computer system.
4thway: reset internet protocol (TCP/IP).
Four: Troubleshoot Apple gadget
1stway: reset the data pipe options.
2ndway: factory reset your iPhone.
3rdway: use the rig Firmware Upgrade (DFU) mode.
4thway: update the iOS version on your unit.