The BlackBerry Storm2 9520 has not been getting as much love as the CDMA version of the Storm2. Adam @Crackberry is working on rectifying that situation by pointing out a leak of OS 188.8.131.521 for the 9520.
NOTE: Do not install this software if you do not know what you are doing. It may make your BlackBerry FUBAR or just plain angry.
Keep the tips coming!