Yesterday, I flash my phone (as you might know, ROKR E2 
) with the newest available firmware or Monster Pack (MP) from our Russian modder, 3-D. The thread is here. I download this files on the Megaupload mirror and on the average speed of 12 kB/s (still damn slow….but better than before), need 1 hours or so to finish it.
Then, I started to backup my phone data (actually just the sysDatabase folder inside ezx_user), power off my phone and remove both SD card and SIM card. After this, I turn on my phone on bootloader mode. This can be archived by holding voice key while powering the phone. Then, I open RSD Lite, connect my phone and start flashing the sbf. (MAXX IV only come with one sbf file)