itunesunknownerror

2023年9月18日—UpdateyourMacorPC·Plugyourdevicedirectlyintoyourcomputer·Restartyourcomputerandyourdevice·Checkyourcomputer'ssecurity ...,2023年12月14日—Checkyourhardware·IfiTunesisalreadyopen,quitandreopenit.·Checkyourthird-partysecuritysoftware.·MakesurethatyourUSBcable, ...

參考資訊如下
If you see an error when you update or restore your iPhone ...

2023年9月18日 — Update your Mac or PC · Plug your device directly into your computer · Restart your computer and your device · Check your computer's security ...

iOS update and restore errors

2023年12月14日 — Check your hardware · If iTunes is already open, quit and reopen it. · Check your third-party security software. · Make sure that your USB cable, ...