V3x unable to read memory

Pls help me bout my v3x...

last time my micro SD memory is 128mb and it works fine after bout a months used, when i transfer files from phone to memory it corrupt..
then i buy a new micro SD memory, 1gig
and when i try to push the memory to the phone theres no warning telling that the phone got the memory.. but when i get the memory out of the phone there a warning telling that MEMORY CARD REMOVE... when i check the devices only i found the options "ALL and PHONE MEMORY" unlike my cousins v3x 3 options are there including "ALL, PHONE MEMORY including MEMORY CARD"

pls help me solve the problem...
thanks all