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Vieux - A tool for 32/64 Bit iOS downgrades using OTA Blobs

By - Matty (Twitter - @moski_dev)

With help from - Merc (Twitter - @Vyce_Merculous)


A MacOS machine (Hackintosh or legit Mac) running 10.14.x or higher (VM's DO NOT WORK, CHECKM8 DOESN'T WORK IN A VM)

Compatible iOS device - If your device is 32 Bit it needs to be jailbroken with OpenSSH installed (Some devices need a reboot and rejailbreak after installing OpenSSH)

The ability to read this README

Device support

iOS 10.3.3

iPhone 5s, iPad Air, iPad Mini 2 (Not iPad4,6)

iOS 8.4.1

iPhone 5, iPhone 4s, iPad 2, iPad 3, iPad 4, iPad Mini 1, iPod 5

iOS 6.1.3

iPhone 4s, iPad 2 (Not iPad2,4)


Usage: viuex [OPTIONS] [IPSW PATH (If required)]


  -i, --ipsw PATH		Path to IPSW file
  -c, --clean			  Clean up any leftover files
  -k, --kdfu PATH		"Path/To/patchiBSS" Enter KDFU mode (32 Bit Only, device must be jailbroken)
  -l, --list			  List what devices can be restored to what iOS versions
  -p, --pwn           Enter PWNDFU mode, which will also apply sig patches (64 Bit Only)
  -r, --restore		  "Path/To/.ipsw" Just restore to a custom ipsw
  -s, --shsh PATH	  "Path/To/Save/Location/" Save OTA blobs to a given path for future use (64 Bit Only)
  -v, --version			List the version of the tool
  -y, --credits			List credits and Big Yoshi

Installing dependencies

Needs Python3 (At least 3.5)

Also needs Python2 but that comes default with macOS

Run 'pip3 install -r requirements.txt' to install all dependencies


  1. 'pip3 install -r requirements.txt' to install all dependencies
  2. 'cd' into the 'Vieux' folder that you either git cloned or downloaded
  3. run './vieux -i "PATH/TO/.ipsw"' or, if the that command doesn't work, 'python3 vieux -i "PATH/TO/.ipsw"'
  4. Follow what the tool tells you to do
  5. Profit?


How do I use this tool?

If you have a 64 Bit device (iPhone 5s, iPad Mini 2, iPad Air) then just connect your device in DFU mode and run the tool, if you have a 32 Bit device then just connect the device in Normal mode, NOT DFU MODE, and run the tool!

What devices does this support/when will it support my iPad XX or iPhone XX?

See above, all compatible devices are already supported. No other devices will ever be supported for the 10.3.3 downgrade. Ever.

Why does the tool not run?

Make sure you have ran "pip3 install -r requirements.txt" before attempting to use this tool. If that doesn't fix the issue, take a screen shot of the error and create an issue on the Github page.

When will other OS's be supported? E.G Linux, Windows, etc...

There will most likely never be Windows support as Windows is an awful OS for any iOS related stuff. Linux support is possible and will most likely come at a later date. macOS only for now, Mojave is best but Catalina works. Lower then Mojave is untested and officially unsupported but feel free to try, just don't expect any help from me if it doesn't work.

Why should I use this over other older methods?

This is by far the fastest tool for OTA downgrades on the market, plus no other tool can do both 32 and 64 Bit downgrades. Also this tool "Just Works (TM)" so there is no reason not to try it!

How can I get help with an error/issue that I can't figure out?

If you have tried everything mentioned in this readme, you can either open an issue on the Github page, tweet @ me (@mosk_i) or send me a DM on twitter (@mosk_i).

Please include as much detail as you can, including but not limited to - Full log from the tool, macOS version, device model/iOS version you are trying to downgrade to and what you have already tried.

MacOS Catalina Security Issues

In MacOS Catalina, there is a new security feature that causes issues with the script. There are two methods to fix this issue as seen below -

Fix 1:

The issue is that Vieux will call certain binaries, and Catalina will display a security message saying: "... cannot be opened because the developer cannot be verified". You will be presented with two options, Move to Trash or Cancel, and you will end up needing to click on Cancel. To avoid this issue, you must give permission to these binaries so that they can run. The easiest way to do so is:

  1. Go to the folder Vieux/resources/bin;
  2. Ctrl-click on the first binary (futurerestore) and select Open;
  3. You will see a security message from Catalina that now has the option Open, click on it;
  4. A terminal window will open and do some stuff, you can close it;
  5. Repeat steps 2-4 for all other binaries in the folder: igetnonce, irecovery and tsschecker. By doing this process, the binaries are saved as an exception on the security settings, and the main Vieux script will be able to run without facing this issue. Note that if you have tried running the script and encountered this issue, you might need to reset your ipad for the downgrade to work.

Fix 2:

  1. Open the 'Vieux' folder in terminal;
  2. Run './';
  3. Give your password when prompted;
  4. Run Vieux again after the script has finished.

Thanks to Salompas for fix 1 and to riotdream for fix 2/their alternative fix seen here!

How do you pronounce "Vieux"?

"vyuh" apparently, I've had 5 different pronunciations given to me, it's French for "old" which fits well with the old iOS versions this tool downgrades devices to! Not that iOS 6/8/10 are bad at all, even given their age.


@axi0mX - Checkm8/ipwndfu

@tihmstar - Futurerestore/tsschecker

@linushenze - SecureROM Signature Check Remover

@geohotz - Fork of ipwndfu ported to Python3

@Vyce_Merculous - General help/Cleaning up my messy code

@xerusdesign - Testing

Schnob - Testing/Fixing non-cellular iPad support


Vieux - A tool for 32/64 Bit iOS downgrades using OTA Blobs






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