jailbreak atv2 4.0 to 4.

i've a question about the jb on my atv2...on my atv2 is the version 4.0, so if i try the JB described here with the custom-firmware-file 4.1, does it update without a problem to 4.1 and will be jailbroken? 

 

Thank you

You can jailbreak both 4.0 and 4.1…save your SHSH Blobs with tiny umbrellas before you do anything…and do it before you jailbreak any ATV firmware version…so do it again before you jailbreak 4.1…the problem arises when you want to jb 4.2…it’s not available yet…hope this helps…ciao