Any reason to keep .ipsw files after updating?

[RedCroissant]

After I update an iOS device, I usually have the .ipsw file in my trash. What I have been doing is dragging the file out of trash and keeping them all in a folder. Can these be used for anything after the fact or is what I'm doing just a waste? Thanks in advance.

 

[PsstGreek]

After I update an iOS device, I usually have the .ipsw file in my trash. What I have been doing is dragging the file out of trash and keeping them all in a folder. Can these be used for anything after the fact or is what I'm doing just a waste? Thanks in advance.

If you need to restore your iPhone, you'll save some time by not having iTunes download the firmware again.

 

[mikeydeezy]

But for the old versions there's no reason to keep them.

 

[Demonface]

But for the old versions there's no reason to keep them.

Unless you have the shsh blobs.

 

[RedCroissant]

Unless you have the shsh blobs.

the What?

 

[Demonface]

the What?

The thing which gives you the ability to downgrade or restore your phone if they update to 6.2