I attempted to Jailbreak my ATV2 last night and although i was successful, it took about 5 attempts to do so and i hope that my post will help others in their attempts.
My equipment includes: a silver MacbookPro - 2.33 ghz with 3 gigs of Ram
an iMac i7 that lives in a spare room/office
My ATV2 which lives in the lounge room
Seas0nPass and ATV Flash
Looking back, my first attempt, i lightheartedly looked at the picture tutorial on this site. I thought i had successfully JB my ATV using my laptop, however i realised i had not, when i could not copy my aTVFlash files to my ATV2. So, using the same laptop, i used iTunes to restore to the factory settings, however, during the install, iTunes displayed a warning and told me that it could not restore the aTV and had the code 1611. I tried again and the same thing happened and i thought it was bricked. I then plugged the ATV2 into my iMac and attempted the restore and that worked fine. A brand new ATV2.
I then read the picture tutorial properly and realised i had not seen any screen relating to iTunes appear. So again, i attempted to JB using my laptop. After it went through its unzipping and everything else, again i did not see iTunes launch. So i restarted seas0npass and also opened up iTunes aswell and had the 2 screens next to each other. This time i saw iTunes being selected but i did not see it choose the new file that seas0npass had created for me. I continued through the tethering stage and tried installing ATVFlash, but was unsuccessful.
So i had itunes restore to the default, and thought that perhaps the problem lay with my laptop. So i brought my ATV2 to my iMac, followed the instructions for seas0npass again and this time, i saw iTunes open up, it tried to look for the file that seas0npass had created and failed. It asked if i could locate it, and i did. It then continued on and restored my ATV2. I then had to get my ATV2 from my lounge room to my office, so i just unplugged all the connections, went upstairs and launched seas0npass on my laptop. I then entered the tethered option, put in the usb and the power, pressed the buttons and hoped for the best. I dont believe there is anyway of telling if the ATV2 has been Jailbroken, but the only way i would find out, was if the aTVFlash files copied accross. I opened up the application on my laptop (i had disconected the usb cable by this stage), launched the app, and all worked fine. It copied it accross. I launched ATV2 and saw i now had the maintenance option and i had a Jailbroken ATV2.
So my problems were related to my laptop. Perhaps there is a minimum requirement when doing this kind of thing... but i used 2 macs to get it to work.
I hope this helps some people out there. If you get 1611 numbers displayed in error messages..all is not lost. Try a newer or different machine.