Is instaling t mobiles stock rom on my canadian galaxy s2 illegal. Its the only rom that can get the jelly bean through cm 10 if im nog mistaken.**Im with a company called koodo. Now i know android is open source and i know what open source means but is installing another phone rom on your phone illegal. I really want jelly bean. I look at the cm 10 file and it sais t mobile. Is there a way i can find out if this is legal or not. I dont want care about warrenty. I just want to know if i can use it.