no
It is correct to say that Cydia is able for ios 7.1.1.
Some ios 6 devices can be jailbroken.
There is no Cydia for Mac OS X. Only jailbroken iOS devices are currently supported by Cydia.
There is no way
No. Cydia tweaks is fully updated for the ios 7 for apple.
Yes you can.
There are no jailbreaking cydia tools for ios 11 or to ios 10.3.3 but there is and demo version trending around the world. try this steps and find out cydiadownload.info, i tried it and it was good but its still need some improvement.
allows 3rd party applications, also considered hacks by some, that enable functionality Apple doesn't allow on the iOS platform
There are no jail-breaking tools for ios 10.3.3 but there is a demo version to jailbreak ios 10.3.3 but it still need lil bit of improvement. but overall the tool is very good. for your reference go to cydiajailbreak.info for more information.
Simply update ios
You can't. It's impossible unless somehow apple let's it into the app store.
nope, u get the ipsw from apple, the legal distributor