Saving Blobs

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This will take you through the process of saving blobs which are required if you wish to downgrade to an older, unsigned version of iOS or iPadOS. You can either use TSS Saver App if you are jailbroken on iOS or use the TSS Saver website. Unjailbroken A12+ users will need a computer for this guide.

Saving Blobs with TSS Saver App

  1. Add the repo.1conan.com repo to your sources in your preferred package manager
  2. Download and install TSS Saver
  3. If you’re using unc0ver on iOS 14, download and install libkrw
  4. If you’re using Taurine on iOS 14. download and install libkernrw
  5. Tap “Save Blobs”
  6. Once you receive the confirmation message, tap “Open”

It may take some time for new blobs to appear especially if the server is under load.

You should now have saved blobs for use in the future

Saving Blobs with TSS Saver Website

A12+ Users will need their ApNonce and Generator pair for this method. If you are not jailbroken, follow the computer-based guide.

Getting Generator and ApNonce (Jailbroken A12+ only)

  1. If you are using unc0ver on iOS 14, install libkrw
  2. If you are using Taurine on iOS 14, install libkernrw
  3. Open a Terminal app and run sudo dimentio > dimentio.txt
    • Alternatively, you can get your Generator and ApNonce from the Generator tab in TSS Saver App
  4. Go to /var/mobile in Filza and open dimentio.txt
  5. Copy the 0x number after Current nonce is at the bottom of the text file as well as the number that comes after entangled nonce:. The 0x number is your Generator, and the entangled nonce number is your ApNonce. Keep these safe somewhere, you’ll need them later
  6. Follow the rest of this guide

Saving Blobs (All Devices)

  1. Connect your iOS Device to your Mac or PC
  2. Open iTunes or Finder
    • Windows users must download the normal version NOT the Windows Store version
  3. Navigate to the device summary page
  4. Click the Serial Number field twice
    • This should change to show your ECID number
  5. Note down this ECID number somewhere where you can read it later
  6. Open the TSS Saver Website
  7. Input your device ECID
  8. Select your Device
    • iPhone 6S, 6S Plus, and iPhone SE users will need to get their board configuration by downloading this app
    • A12+ users will need to input ApNonce and Generator pair
  9. Click Submit

It may take some time for new blobs to appear especially if the server is under load.

You should now have saved blobs for use in the future

Saving Blobs with Computer (A12+)

After getting the values from this guide, you can continue saving blobs with TSS Saver forever.

Read your device’s ECID

  1. Connect your iOS device to your computer with an OEM Lightning cable
  2. On macOS, connect your device and run
brew install libimobiledevice
ideviceinfo | grep UniqueChipID
  1. On Windows, open iTunes and click on your device’s Serial Number twice
    • This is your ECID
  2. Convert the ECID value from decimal to hexadecimal using this decimal to hexadecimal

Download and install getnonce

You will need Python 3 for this part of the guide.

  1. Download libimobiledevice-net
  2. Extract the .zip file

On macOS, you will also need to install irecovery with brew install irecovery

  1. Save this webpage link as getnonce.py

Get your device-specific APNonce and generator

Make sure your device is connected and unlocked throughout this process.

  1. Open Terminal in macOS or Windows Terminal on Windows 10.
  2. Run these commands
cd /path/to/idevicemobile-net/directory
pip install xmltodict termcolor
python getnonce.py

If python or pip don’t work, try python3 and pip3 or py and py -m pip

  1. Press n when prompted

Your device will reboot into recovery mode multiple times. When you reboot into normal OS mode, unlock your iOS device.

Make sure to write down your “ApNonce” and “Generator” values.

If there are any errors or red lines, you cannot continue.

Save Blobs

  1. Visit the TSS Saver website
    • You can also use alternative methods like AutoTSS
  2. Input your iOS device’s ECID and device type as well the ApNonce and Generator in their respective fields.

These values can be reused at any time to save blobs whether or not you’re jailbroken.

Please note that you should not use tools that allow you to input a different generator value unless you can be sure that you will remember it.

It may take some time for new blobs to appear especially if the server is under load.

You should now have saved blobs for use in the future