Register Ecid - Iphone New
Connect your iPhone to a computer and open iTunes (Windows) or Finder (Mac). Click on your Serial Number until it toggles to display the ECID .
Sites like TSS Saver or SHSH.host require you to enter your ECID to save digital signatures (blobs) for your current iOS version, allowing you to restore to that version later even after Apple stops "signing" it. register ecid iphone new
Once you have successfully registered your ECID and saved blobs, you can eventually downgrade your new iPhone even after Apple stops signing. Connect your iPhone to a computer and open
Plug your iPhone into your Mac or PC via USB. register ecid iphone new