Default ZTE Open Hong Kong firmware request

According to Mozilla's ZTE Open page, the HK Version supports:

Note: the Hong Kong phones also support tri-band 3G Networks — HSDPA 850/1900/2100 (850/1900 for US, CA, 850/1900/2100 for Asia, AU, and 900/2100 for EU.)
Yes a tri-band radio, does anyone have this firmware?

ZTE's support site only has v795 firmware, I would like my Open to be able to work both sides of the Atlantic, without reflashing.