Accidentally replaced the original SMS ringtone on IPHONE4. But there was no backup. Now I want to find the initial buzz of texting. Is there any way?

Open the settings on the mobile phone, enter GM, click on the phone to see the version.

Download the firmware of the same version as the mobile phone online.

Connect your mobile phone to your computer, open itunes, select your mobile phone in Itunes, press and hold SHIF, and click left to restore. Select the firmware you just downloaded.

At this point, the system will be redrawn. After refreshing, it will automatically unlock (lock-free version), and then itunes will have the option to resume the backup, but don't resume it, and then go to the next step (if Itunes backup is resumed, the original system sound will probably not appear). The machine restarts automatically. It's done. All system sounds and ringtones are in the original state. If you want to escape from prison again, that's another matter.

You can also directly use the ringtone management in 9 1 mobile assistant. But first, you need to borrow someone else's Iphone and use the mobile assistant to turn down the system sound you want. And pass it on to your own machine.