(Once the original version is installed on HERO, it is automatically set, but I can't send and receive MMS. Due to the contemptuous "scheme" to boot, I refreshed the phone, carefully, root privileges, recovery, and after the software is fully installed, I initially had a headache from MMS Internet access. Waiting for the problem, I found a lot of posts, but none of them were successful. Finally, with the help of Big Brother Xiufuyang, I got it.)