Get your iPhone's ECID by following these instructions:
● How to Find Your iPhone ECID Using iTunes
Get your iPhone's Model Identifier by following these instructions:
● How to Find Your iPhone 'Model Identifier' Using iTunes
Open a browser and navigate to https://tsssaver.1conan.com/
Under the ECID section, enter the ECID you obtained in Step One then select your device using the Model Identifier obtained in Step Two. Click the Submit button to continue.
The site will save your ECID and then provide you with a link to where your SHSH blobs will be saved. Click the link to continue.
You'll be brought to a directory listing the saved SHSH blobs for your device. Click the Download ZIP button to download your SHSH blobs.