I did update the ROM on my HTC Diamond and it's really a great upgrade. Now I can connect with the 850mhz freq (Comcel) in the outskirts mountains near Bogota, Colombia where I live. Before I only had connection using the 900mhz freq in the city. Using another cel provider like Tigo which functions in the 1900mhz freq ther is not problem whatsoever. Still 3G it'll be impossible for some time since in Colombia there is only 850 and 1900mhz use.