[jontas]

Assuming it is a 4 digit numeric passcode, that's only 10,000 possible combinations. At 80ms each (let's round up to 100ms to be conservative) that's only ~17 minutes. Even if it is a 6 digit pin we're only talking about ~28 hours (if they use a single, serial process).

[habosa]

That is true. Most people use a 4-digit or 6-digit numeric password and that's what the FBI is betting on when they ask to remove the brute force restrictions.

However Apple allows something like a 35-char max with numbers and letters so in the worst case they will never crack it.

[jontas]

I don't know if it is correct but I've seen it mentioned elsewhere in this thread that the passcode they need is 4 digits.