I think I saw one once but it was for firmware 4.0.0. I'm not asking because I'm inpatient, because I have a PS Vita for all my Homebrew needs but I am curious.
Patched unit currently only support up to 4.1.0, eventually, it would support up to 7.0.1, as the exploit got patched in 8.0.0, it is recommended to get an unpatched unit.
For now, the only iPatched switches that can be hacked are those on firmware version up until 4.1.0
Word has it that Deja Vu (the exploit vuln that allows us to run CFW on <=4.1.0 switches) might work on up until fw 7.0.1 but that's not going to happen anytime soon.
If you intend to hack your patched switch check out the many guides out there such as this one
Caffeine runs on the PegaScape switch WebKit allowing you to boot CFW thereof.
Keep in mind that autoRCM MUST NOT be enabled at any cost or it will cause a brick.