1) ES File Explorer (free) is a must have file app in itself. In the top left corner is a button that says Local. Press it and then FTP. Then press the Menu at the bottom where your back or home buttons located. You will see an option ‘New’. This will allow you to choose sftp. Fill in the Info and connect.This will set up the server for future uses.

2) AntTek File Explorer & AntTek FTP/Frost/Serpent Client- Es File Explorer works on LG Optimistic but the sftp option is not available for some reason. I found AntTek and I am liking it but still prefer Es File Explorer on my Acer a500 for now. This is still good so install the file explorer first then install the serpent client next. Open the app and at the top left corner you will see ‘device’s button, press it and go down to network and press.Create New and then Sftp and fill out your IP, root, password. This is SSH like cyberduck and winscp. If you want to enter command lines like terminal on Mac you can with

3) Better Terminal Emulator Free or Pro- With this you choose btep I believe not local. Fill in the information and with this one you can create shortcut which adds a widget on your home screen that boots right into your device and saves it for future uses. This is a very fast way to enter commands and the file explorers are a fast way to add repo’s, clean cache and free memory on you ATV or iPhone/itouch. No more booting your computer and then software to do quick fixes or new adds or removing and reinstalling xbmc etc. I also recommend Thumb Keyboard which is great on tablets for fast typing to make the whole saying quick and fast. The only thing is you must have android for these apps. Not sure any longer if the iPhone can SSH into the ATV. There is iFile and Mobile Terminal but I forgot most hacks ever since I got me android. I hope this was helpful, I know I would have found it so. Let me know what you think. If you want pro versions get 4shared and find blackmart alpha apk and search on there for them. Take care

Reading package lists… DoneBuilding dependency tree… DoneSome packages could not be installed. This may mean that you haverequested an impossible situation or if you are using the unstabledistribution that some required packages have not yet been createdor been moved out of Incoming.The following information may help to resolve the situation:
The following packages have unmet dependencies: org.xbmc.xbmc-atv2: Depends: org.xbmc.xbmc-seatbeltunlock but it is not installableE: Broken packages

Thanks

2. Open Terminal and SSH (putty) into your Apple TV2. Type: ssh root@your-ip-address, then your password (default is alpine)3. Type: passwd and enter a new password (if you haven’t already)4. Type: echo “deb http://apt.awkwardtv.org ./” > /etc/apt/sources.list.d/awkwardtv.list5. Type: apt-get update6. Type: apt-get install com.nito.nitoTV 
7.   Type: reboot

thats it

http://pwnagetool.us/firmware-download/apple-tv-firmware-download/