Help/Support How to remove update installation files from IOS devices?

[Emalosai 0 5]

Hey all dudes!
I would ask you maybe a simple question but not that simple for me hahahah
When i hadn't jailbreak, i downloaded the files of IOS 8.1....i don't remember which update (don't ask me, iphone just downloaded that when i was in a wi-fi zone ) 
Well, by now i have jailbroken version of 7.1.2 IOS, but that files still stays in my device occupying something like 1.5gbs..
Can i find a method to safely remove that files without compromise entire system?
that would be really helpful, thanks a lot 

p.s.: sorry for my english , i'm a cursed italian 

[Rook 554.3k iPad Pro (2nd gen) 17.4 Donor]

I think there's an option in Settings - General - Software Update to remove the update files?

 

If not, check in Settings - General - Usage - Storage.

 

Another option might be the use of iCleaner from Cydia or run this command in mobile Terminal:

 

find . -size +700M

 

It'll list all files on your system which are above 700MB.