to host..? you need a jtag/rgh/Rjtag before you buy stealth, the point of stealth is to dummy microsoft into no being able to pick up that you are running a jtagged xbox?

I have a jtag it does not turn on can anyone help me with that

I'm not sure I fully understand what you want to know though xD how to fix your JTAG or whether you need your JTAG to still run JTAG programmes (which obviously you do)

I'm not sure what you are trying to say but here are some suggestions:

If you are trying to say your jtag can't boot up then you probably have bad plugins, try turning on the console by pressing the power button and quickly press the eject button. This will load up your jtag without plugins. If this doesn't work then you have a bad flash, try to loading up xell by turning on your console with the eject button only. If xell doesn't load up then you do have a bad flash. Check youtube or google on how to recover from a bad flash.

If you are saying you need stealth for a jtag to work, then the answer is no, only if you plan to go online with a jtag then you will need stealth. I would recommend only high standard stealth servers such as XboxLiveServer and XBLSE.

I hope this helped but if you could please describe more briefly about your problem it would help a lot more and more people could answer.

Ok im pretty much lost now between this topic and the other you have that we are trying to help you on!