Will “Erase All Content and Settings” update my iOS to the latest version? I am currently on iOS 8.4.

  • Do you want to update iOS?
    – kal-al
    Sep 14, 2016 at 5:46
  • @kal-al I do not.
    – Adderall
    Sep 14, 2016 at 5:48
  • Well okay, you don't need to worry then! As the answer below says, it does not cause the phone to update. Basically it just removed all the settings, apps, media, and documents you've ever put on your phone, so it's basically like new. (Though there's a couple other things to do if you want to sell the phone, you didn't say you wanted to do this though.)
    – kal-al
    Sep 14, 2016 at 5:51
  • @kal-al thanks for the quick response! Basically, I just don't want to lose my jailbreak.
    – Adderall
    Sep 14, 2016 at 6:03
  • Ah, well you'll probably need to re-jailbreak it then if you erase everything. Though I think iOS 9.3.3 had a good jailbreak.
    – kal-al
    Sep 14, 2016 at 6:39

2 Answers 2


No, "Erase All Content and Settings" will not update your device. Your device will remain on iOS 8.4.

  • 1
    Thanks, but I've heard that selecting this option on a jailbroken iPhone could likely cause it to get stuck in a reboot loop; do you know if there is any truth to this?
    – Adderall
    Sep 21, 2016 at 22:16
  • @Mayur if yo can link to specifics about what you heard it can help. Hard to refute something "that people are saying"
    – bmike
    Oct 16, 2016 at 12:24

Excuse me being late to the party.

I'm an avid JailBreaker myself, and I am on iOS 8.4 like you.

8.4 is the highest iOS I believe that's JailBreakable within the 8 Range.

iOS 9 is currently at 9.3.5, which is not JailBreakable.

iOS 10 apparently may have difficulty being JailBroken in the future, JailBreakers say it's a much harder challenge than ever before.

Using 'Erase all Content and Settings' on your iPhone will cause the iPhone (if jailbroken) to erase all its contents and settings. Your tweaks, apps, everything. The iPhone will be as if it came fresh from the box.

HOWEVER. Jailbreaking your iPhone modifies the iOS structure, it adds, changes and deletes files and folders in iOS, and the iPhone's local reset feature isn't aware of this.

If you use the 'Erase all Content and Settings' option, your iPhone will either BootLoop, or it will restore correctly.

If you're lucky for your iPhone to restore correctly, when you rejailbreak it, Cydia also has a chance to fail installing properly. Thus every time you try to open it, it crashes.

There's no current fixes I am aware of when this happens, other than to update / restore your iOS to the latest firmware. (Which you do not want.. obviously.)


If you want to Erase all your Contents and Settings and KEEP your Jailbreak on the iDevice I recommend these programs;

SemiRestore (Computer Program)

CydiaImpactor (Cydia Tweak)

iLexRat (Cydia Tweak, Requires 'Mobile Terminal' Tweak to use. Refer to online instructions)


I also recommend;


As this tweak will make your 'Erase all Content and Settings' button turn grey, so you cannot accidentally screw up your device.


I've used iLex Rat and it has worked for me most times, depending what you do to your iDevice results can change and you will need to Restore.

If you use iFile, chances are you're modifying your firmware directory and system a lot.

If I was you, if you have a problem with your iDevice, then I suggest you;

1: Turn off the Phone

2: While holding Volume Up button, turn on the phone, keep holding the button

3: You will enter 'Substrate Mode' all Tweaks will be inactive.

4: Go to Cydia

5: Download and install Tweak 'CrashReporter'

6: Use your device until CrashReporter notifies you of an issue.

7: Find and uninstall all the Tweaks you think you're having problems with.


I hope I've informed you enough, and... hopefully I'm not too late and stopped a catastrophe.

Remember, only do a 'Restore' or 'Erase' of your JailBroken iDevice if you have absolutely no other choice. Avoid it like the plague.

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