1) stable(穩定版) experimental(實驗版兩個): these will sometimes have less than stable tweaks and mods. They also have ColorControl from Ezekeel. Keywords: experimental and NOT STABLE 2) 180mhz: two additional freq slots: 180MHz and 1.42GHz 3) 230mhz: two additional freq slots: 230Mhz and 1.42GHz 4) notrim(狂人版?): (OC'ed to 1.52Ghz/1.65Ghz) - this version overrides the max speed restriction imposed by TI/Google. The phone will run hotter and less stable at those speeds - USE AT OWN RISK. Includes "checkt" script that displays 1) your current temp, 2) # of times you were throttled due to temp "recently", 3) CPU trim type, and 4) CPU silicon type. (sample output) The notrim version also has smartReflex1.5 disabled - this could help those of you with unusual battery drain issues.