How to downgrade (or update) to iOS 10.2

By , Jan 27, 2017

We recently covered the release of Luca Todesco’s first build of yalu102. This tool will eventually allow all 64-bit devices to jailbreak iOS 10. iPhone 7 and iPhone 7 Plus will be able to use it on iOS 10.0-10.1.1, all other 64-bit devices will be able to use it on iOS 10.0-10.2.

As the signing window for iOS 10.2 could close at any time, the pressure is on to downgrade to iOS 10.2 if you are currently on a higher firmware. Some people on a lower firmware should also upgrade to iOS 10.2, but not everyone. In this guide, we’ll talk you through how to upgrade/downgrade to iOS 10.2 from a lower/higher firmware, if you are one of the people who should be there.

Who does this definitely apply to?

Everyone on iOS 10.2.1 or iOS 10.3 beta who wants to jailbreak, now or in the future.

Who does this definitely not apply to?

Everyone who is already on iOS 10.2.

Who does this maybe apply to?

Some people on a firmware lower than iOS 10.2. This is more complicated.

If you have an iPhone 7 or iPhone 7 Plus and are on lower than iOS 10.2, do not update to iOS 10.2, stay on a lower firmware!

Everyone else should check out my advice for all devices on all firmwares to find out if you need to stay where you are, or move to iOS 10.2.

Requirements

  • A computer with iTunes installed on it.
  • An iOS device which you want to move to iOS 10.2.
  • The iOS 10.2 IPSW file for your device, which you can get from our downloads page.

Instructions to downgrade to iOS 10.2 (or update)

1) Ensure you have backed up your device to iTunes and/or iCloud before beginning. I backup to iTunes with ‘Encrypt Backup’ selected, to make sure I have a hard copy on my computer which also contains all my app passwords and email account details. Manually save any other data off your phone that you may want, such as your Camera Roll. If moving from iOS 10.2.1 to iOS 10.2, you will not be able to restore a 10.2.1 backup to your device on 10.2, so make sure you save anything you want now.

2) Ensure you have downloaded the correct IPSW file for your device. Some devices have multiple models with different IPSWs. For example, iPhone 5s has Global and GSM variants, and their IPSWs are not interchangeable. The IPSW must be for your exact device model, and must be for iOS 10.2 only. As you can see in the image below, my IPSW clearly states it is for iPhone SE (there is only one model of SE), and for iOS 10.2.

3) Go to this site, select your exact device model, and make sure iOS 10.2 is still being signed for it. If the page reports it is no longer signed, stop immediately. This procedure will fail if iOS 10.2 is not signed, and may force you to move to iOS 10.2.1 or higher. If iOS 10.2 is still signed, move to step 4). As you can see in the image below, at the time I downgraded to iOS 10.2, the firmware was still being signed for my device.

4) Connect your device to your computer and launch iTunes. If it prompts you to upgrade or download a newer firmware for your iOS device, tick Do not ask me again and then click Cancel.

5) On the connected devices page, look for the two buttons labelled Restore and Update.

6) Select which option you want to do. Restore is recommended because it completely wipes all files from your device. This gives you a clean start and avoids stability issues later on. Update keeps all your data as it is, but can occasionally cause problems.

7a) If you are restoring, hold down the Option key (Mac) or shift key (Windows), and click Restore.

7b) If you are updating, hold down the Option key (Mac) or shift key (Windows), and click Update.

Do not just click Update or Restore. You must hold down the relevant keyboard key whilst you click Update or Restore. If you do not, iTunes will automatically install iOS 10.2.1 instead of iOS 10.2, without asking you.

8) After Option-clicking the Update or Restore button, a file browser should appear. Navigate to the location where you saved the iOS 10.2 IPSW file which you downloaded earlier, and select it.

9) iTunes will ask you whether you want to use this IPSW to restore your device. Make sure it says it will restore to iOS 10.2, and not another firmware. If it all looks good, confirm the decision.

10) The restore process will now begin. Do not disconnect your device from the computer until it has finished restoring and booted back up to the lock screen.

11) Optional: only for people coming from lower than iOS 10.2, not for people coming from iOS 10.2.1 or higher. If you restored instead of updating, you can now decide if you want to restore a backup onto the device. Again, I recommend setting your phone up as new, but a backup can be applied here if necessary. If you already selected Update in step 6), this is not necessary because all your data is still on your device.

You are now safe and sound on iOS 10.2, ready for yalu102 to reach primetime. Once again, if you are trying to decide if you need to follow this guide, here is the general rule: If you’re on iOS 10.2.1 or higher, follow it. If you’re on iOS 10.2 already, don’t. If you’re on lower than iOS 10.2 already, read my advice for your specific device and version.

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  • Cole

    So technically could I update to the iOS 10.3 Public beta then downgrade to iOS 10.2 and restore from the same backup or would it not be compatible like downgrading from 10.2.1 –> 10.2?

    • It wouldn’t be compatible

      • kevwkev

        You can hold option(alt) and click update to downgrade from 10.2.1 to 10.2 and keep all data

    • Rodney Coleman

      No it wouldn’t. Once you back up on a higher firmware it won’t load on a older firmware.

  • Grolubao

    If I have an iPhone 6 should I just stay in the lowest?

  • Steve Harold

    Best way to do it is to downgrade by upgrading. I was on 10.2.1 and “upgraded” to 10.2 and now I am happily jailbroken.

    P.S we need a tweaks article

    • Joaquim Barbosa

      I prefer to start fresh by restoring and setting up as new, but I agree that for those who don’t want to start from scratch, this way is also an option. I’ll put together a tweaks and advice article for the jailbreak soon. Thanks for reading!

  • Mario

    Very well written guide Joaquim, I’ve been Jailbreaking since iOS 3.1.3 and this is one of the best written guides I’ve seen, thanks!

    • Joaquim Barbosa

      Thanks Mario, glad it helped!

    • Agneev Mukherjee

      Woah! iOS 3?

      • Mark S

        I’ve been jailbreaking since 1.0.2 myself. Miss those days.

      • Dave

        Do you have a jailbroken phone on 1.x right now ? 😀 Because I do and need to ask someone a few questions.. .

    • iKhalil

      So do I, I still having my iPod 2G jailbroken playing some old-school games that are no longer at appstore

  • Alon Itzhaky

    So now if I’m on 10.2 and I have a pending iOS 10.2.1 update on my iPhone (not installed), what do I do now so it won’t update by itself?

    • Go into settings, general, storage & icloud usage, top storage section tap manage storage, find the iOS update file 10.2.1 and tap on it, then there’s a button that says delete or delete data tap that and the installer will be fully deleted from your phone. As long as you don’t go into the update section to check for the update or have a setting turned on to update automatically you’ll be just fine.

  • Mark S

    “A computer with iTunes installed on it.”

    That’s funny to see that as a requirement. Some people might need to see this too:

    A house with electricity.

    • Joaquim Barbosa

      You’d be surprised. I’ve had ‘can I downgrade from on my device?’ before, trust me!

    • 5723alex .

      I know many with iPhone devices with no iTunes installed as they don’t need the app.

  • David Gow

    Ok I have successfully updated to iOS 10.2
    Patiently waiting….

    Thanks again to everybody involved in the jb and iDB for all of the hard work

  • Rodney Coleman

    If ppl don’t know this then they need to move to android

  • bigd215

    I’ve a iPhone 7 plus running iOS 10.1.1 will I be able to jailbreak using the Yalu102?

    • Joaquim Barbosa

      Read the article please, the answer is yes. Cheers.

  • Wicrowe

    What is the source of info for the statement “This tool will eventually allow all 64-bit devices to jailbreak iOS 10”? Thank you.

    • Joaquim Barbosa

      The source is all the information which has been given out about the jailbreak. It’s written on the GitHub, and Luca has confirmed it on his Twitter more than once. Thanks for reading!

      • Wicrowe

        Great. I follow him on twitter and did not come to that conclusion from his tweets. Not on Github however. Guess who’s presently on an unsupported device?! Thanks again!

      • Joaquim Barbosa

        No worries! Hopefully the other devices will get support soon, I think they will. Cheers.

  • Nanda Kishore

    Nice guide!
    Very detailed.

  • iltas

    Better make full tutorial to better understanding

    • Joaquim Barbosa

      This is a full tutorial. I can’t see what more I could have added. What part are you stuck on?

  • Rockwell

    Thank you for this!

    Have been jailbreaking since the begining, but it always eases the mind when having a step by step guide to follow.

    Looking forward to an easy 10.2 (hopefully) one click jailbreak for the mac.

  • Alberto Houtmann

    hey there, is possible to downgrade 10.3.1 to 10.2 without losing data?

    • Natalie

      Kinda… You /can/ shift update to 10.2 from 10.3. I have only seen it done from beta firmwares though. And your device has to be in DFU mode.
      Don’t take my word from it though. Do a quick YouTube search to confirm.

      • Alberto Houtmann

        I did that but during updating iTunes stopped with an error that could not update the iOS

  • Natalie

    I’ll stay on 10.3 :/ All I want is tetherme and none of this is worth it 🙁

  • Agneev Mukherjee

    So, supposing someone is restoring to iOS 10.2, and amidst the restore and verification with Apple, the signing window is closed, what happens then?

    • Joaquim Barbosa

      It would fail. That’s why it is better to restore sooner than later, if you are going to restore at all. Unless you are using Prometheus later.

      • Agneev Mukherjee

        Well, due to bugs with Cydia not Reloading Data, I had to restore iOS 10.2 thrice so far, still preference panes of themes are crashing!

  • Shlomy Malka

    You guys wast your time ! there is no jailbreak and its will not come out, look how long we waiting, new jailbreak will hold for short time and than the story go all aver again.

    • jaimem17

      My friend, jailbreak for 10.2 is out for some devices and more coming over the weekend. Get informed before commenting.

      • Shlomy Malka

        That what you called jailbreak? Its support older devices, its complicated to do,not stable and if the device turned off you have to jailbreak again. Its not like 9.3.3 and before.

    • Joaquim Barbosa

      Incorrect. It is already out, and more devices will soon be added.

  • Luis B.

    I keep getting the message “The firmware file is not compatible.” I’m 100% sure I have the right file as I’ve re-downloaded it from different websites. I’m able to restore 10.2.1 but not 10.2.

    • Joaquim Barbosa

      What device?

      • Luis B.

        iPad Pro 9.7 Wifi

  • igobythisname

    Wow, I’ve always put my iDevices in DFU mode when doing the Shift+Restore option in iTunes, is that no longer necessary?

    • Joaquim Barbosa

      It can fix some harder-to-fix problems, but in most cases should be the same as a normal Restore. Thanks!

  • :D

    Should i updated if I have an iPhone 6 on 10.1.1? There’s nothing in the other article about the iPhone 6.

    • Joaquim Barbosa

      Yes, there is. iP6 is a 64-bit device. Look in the article for advice for 64-bit devices. I say in the other article that you need to know what kind of device you have, 64-bit or 32-bit, to find the advice.

      • :D

        Hm okay, I didn’t know it was a 64 bit device

  • Eliijah Moss

    Quick question. Sorry for asking a mundane question, but is it possible to downgrade to iOS 10.2 without blobs?

    • Guilherme 

      If you’re on 10.2.1 or 10.3 B1, yes, for now it’s possible to downgrade without blobs. That’s valid until Apple stops signing 10.2, then there’s a possible chance to downgrade/update to 10.2 with blobs using Prometheus tool. We don’t know yet if the tool will actually work tough…

      • Eliijah Moss

        Sorry. Thank for the info. I should have read from word to word

  • David Gow

    Since ive updated I noticed my phone heats up more frequently and cools down. Scrolling can be choppy.

  • Steven

    Ok, well I need to jailbreak my phone because I don’t have a computer to downgrade back to IOS 10.2 from 10.2.1, I want to download the app MovieBox but everything I have tried has failed.

  • Efrain x

    okay, so question. i have an iphone 7 running ios 10.0.3 should i update to ios 10.2 for a jailbreak or stay on this on 10.0.3. please respond asap as they still sign ios 10.2 i would like to upgrade if i have to before they stop signing it.

  • Nicole Tan

    I’m on ios 9.3.3 and I can’t seem to update it to ios 10.2 as it keeps saying my firmware is not compatible. I’ve tried everything, turned off my antivirus, restarted my computer, reinstalled iTunes and even re-downloaded the correct firmware. I just can’t seem to get to ios 10.2

  • Dave

    Is it correct that 10.2 signing window was closed yesterday / today? ://

  • Yitzi Powers

    10.0.1 on 5s?????

  • Embok Ramdé

    I haven’t updated yet, saved the blobs though. Any news on Prometheus for 10.2 yet? Or has it been out there? Tried googling for one but couldn’t find.

  • Rahul bhati

    sorry am i late my phone is on 1os 10.2.1 can i still downgrade or is it already closed, i would also like to update to ios10.2 on my other deacive which is on ios 8 plz replay