update at2 from 5.0.2(4250) to to 5.3

havent used my apple tv for long time and seems that its still running the 5.0.2 firmware, can i update it to 5.3?

if yes, how this can be done? 

Thank you in advance.

 

http://support.firecore.com/entries/387605-Jailbreaking-101-Seas0nPass

 

there u go. just let seas0npass let the update