After Apple's mobile phone system is updated to 8.3, the weather forecast cannot be updated (for example). What is the reason?

Scheme A: The USB port on the front of the chassis is short of power, so it can be solved by plugging in the USB port on the back of the chassis.

Option B: If a friend uses an unofficial data cable, it will also make it impossible to back up. At this time, it is best to borrow it from friends around you, and then try plugging it in the back of the chassis under the condition of ensuring power supply.

The second case: IPA reason

Scheme A: Delete the software whose format such as PLX has been manually changed to IPA format.

Option B: If you find an application with an IPAD suffix, change it to an IPA suffix.

Scheme C: SBS fixes the BUG of jailbreak permission (I have never tried this myself, and other methods are only for reference when they fail).

Scheme D: Someone in the forum mentioned that a software called ROCK can solve it (I have never tried this myself, and other methods are only for reference when they fail).

The third case: 9 1 auxiliary cause

A: Delete all previously installed applications through tools such as iFunbox.

B: Reinstall 9 1, use 9 1 to delete all installed programs and delete backups.

The fourth situation: I didn't escape from prison.

A: Go to iTunes Edit-Settings-Devices-Delete Backup-OK-Right-click on your iPhone-Make a backup and synchronize.

B: Generally speaking, it is rare that you can't back up without jailbreaking. Should all belong to the first category. If none of the above methods can solve your problem, and you really really want to back up normally, you can try to restore the latest official firmware.

Q:

I'm using the transmission portal of my laptop. I haven't moved the second one, downloaded 9 1 assistant, or escaped from prison. How should I update?

Answer:

If all else fails, you can only back up your phone first and reply to the firmware urgently.

Q:

Will the system become 8.3 after restoring the firmware?

Answer:

If you download the firmware of 8.3, it is 8.3. Even if it is not, you can connect the computer to restore the firmware, so you can definitely connect the computer to upgrade. However, I suggest you try on another computer first. Is it still the situation you said before? Restoring firmware is the next best choice.