It's easy to save blobs, there's an online tool...just google it. You can save them to your desktop, but if you're returning the phone there's no point in saving blobs for it because blobs are unique to each device (at least they used to be).
Not sure why you want to save them for an iPhone you plan on returning, you can't use shared SHSH blobs with other devices. They can only be used with the device they came from
It's easy to save blobs, there's an online tool...just google it. You can save them to your desktop, but if you're returning the phone there's no point in saving blobs for it because blobs are unique to each device (at least they used to be).
I tried using that telegram bot, it didn't work very well. Looking through some of the comments it seems many others are having issues.
The tsssaver website is MUCH easier: tsssaver.1conan.com I'm pretty psyched that I have blobs saved for 10.3.1 and 10.3.2. Even though Pangu sold out to Apple, hopefully someone else will come along.
Ok, now I have a question : if I have saved previously ssh files on iCloud Drive, how can I restore my device to that version? I'm totally in an unknown territory in this case but I want to know how to do it in case that one day I will need these ssh files!