A some time ago I’ve bricked my NGW100 board by overwritten the U-boot from flash. To fix it was necessary using a JTAG interface, so I check some alternatives.
AVR JTAGICE mkII (US$ 299) [official] http://atmel.com/dyn/products/tools_card.asp?tool_id=3353
AVR JTAG ICE mkii CN (US$ 99) http://enshop.avrvi.com/avrjtagicemkiicn.html
AT AVR JTAGICE mkII clone (US$ 159) http://enshop.avrvi.com/jtagicemkiiclone.html
Considering that NGW100 itself costs about US$ [...]