: If you saved blobs for an older version while it was still being signed, you can use specialized tools to "replay" that signature and trick your device into accepting the older firmware.

He spent the night extracting. The white blob contained the first photo he’d ever taken on that phone—a blurry shot of a rain-spattered window. The purple blob held a text argument with his brother, the one they’d made up from two days later—the hash preserved the raw emotion of the fight, even if the words were gone. The green blob was the strangest: it contained a three-second recording of his own laughter from a forgotten voice memo, a laugh he no longer recognized as his own.

The white Apple logo on his phone flickered. It didn’t boot. Instead, the screen became a deep, oceanic blue. And floating in that blue were shapes.

Even if you aren't planning to jailbreak today, saving blobs is a "better safe than sorry" practice.

SHSH blobs also play a significant role in the jailbreaking community. Jailbreaking allows users to remove software restrictions and gain root access to their devices. However, SHSH blobs can make it challenging to jailbreak a device, as they prevent devices from being downgraded to a vulnerable version of iOS.

SHSH blobs are a "Hail Mary." They are worth saving (it costs nothing), but do not assume you will ever use them. The SEP wall is currently too high.