Team-Xecuter Community

I can read any nand with J-Runner using my usb programmer, but I can not write. just gives block error for each and every block. I can however write with jtag tool. I can get around problem by writing J-Runner's update.bin with other software but it would be really nice to do it all inside J-Runner. I do not know the name and there is no model number on my programmer (covered with heat shrink) but here is a link to the connections and use I was given with it.
Thanks so much for any help

http://jtag.xbox-experts.com/jtag_install.html