You’ve never known that your cheap phone can do more than you expect and can is fastter than some expensive brand nome phone.

1. ClockworkMod Recovery for G5 – CWM to update ROM from the MAD Team, no need for the Odin.

http://www.madteam.co/forum/development/(development)-ltsecret-projectgt/

2. Flash Player work for G5, by DashBlack,

http://www.galaxy-5.blogspot.com/

3. CyanogenMod 7.1 port to G5 + overclock and stable.

http://www.madteam.co/forum/development/(development)-cyanogenmod-7-1-‘galaxy5’-port/

Do it at your own risk, so far my G5 still working.
Need to read carefully what to do, how to do.