Hey guys i recently purchased a Xbox 360 Pro/Go with 60 GB HDD. It's manufacturing date is after August 2009 and it is already hacked to play backup games. The problem is that i brought it from a shop and i don't know which form of modification is done to Xbox 360 so that i can play backups.
I am new to Xbox Scene i don't know much but what i know is that we can either install a modchip or JTAG our Xbox to play backup games. My Xbox came with 8498 kernel and is Jasper Model with HDMI Support and HDD. The HDD is filled with some videos and trial version of several Arcade games.
I want to know if my console is already JTAGGED. I want to play XBLA and use other Homebrew on my Xbox, Will i be able to do this even if i just have a modded Xbox or JTAG is required for it. When i try connecting to Live it says an update is found and if i don't update it doesn't allow connecting to Live. There is some Xbox Dashboard file in the HDD which is guess is the Dashboard update.
Is it safe for me to update my Dashboard and connect to Live if my console is modded and not JTAGGED and if it is so will i won't be able to use any homebrew until i JTAG?
I don't want to play online games through Live, I just want to create a Live account. I want to use XeXmenu to play games and use emulators as well. I don't have any means to connect my HDD to my PC but i have already ordered the cable for connecting it to PC and it will arrive in a couple of days so until then i can only use Usb

. Any help will be greatly appreciated.