In section 1, we introduced the concepts
of checkra1n and checkm8.
Let's now look at this.
When I say tethered versus non-tethered, what I mean
is to power.
So previously, before, I think, iOS 7.3, you
could have a non-tethered jailbreak, which means,
if the phone rebooted, if it lost power, you turned it off,
the jailbreak stayed.
It was persistent.
Now our jailbreak are tied to power, which means,
if you jailbreak your device with checkra1n
and you lose power, you have to re-jailbreak it
when it turns back on.
So when you see tethered, it just means tethered to power.
So think of almost like a tethered cable.
Keep that thing powered if you have a jailbroken device.
Remember, checkm8 is the exploit.
Checkra1n is the first jailbreak.
UnCover supports more recent devices,
and at the time of writing this, it was up to 14.8.
Expect others to keep surfacing.
But remember, the checkm8 exploit
is only on certain chips.
So if you have the iPhone 13 Pro,
this exploit doesn't exist.
You would have to use the different boxes,
such as GrayKey or Premium to get access to those devices.
These will get you full file system access.
I can honestly tell you, I have never ruined an iPhone
by jailbreaking it--
never.
Worst case scenario is it doesn't stick.
But I have never had it where it won't boot,
or it won't turn on, or it wipes user data.
That doesn't happen.
So I don't think it's a big risk.