trouble with 256 mmc

[super3650]

hi everybody...
i owned a nokia 3650,yesterday i have buy a new mmc card for it at ebuyer.com....but when i put it on my phone, the phone detect it but cant use it....by using fexplorer, the mmc is ROM which cannot be write or read....i have tried to format the mmc using the phone and card reader....but still cant be used......any idea that can solve my problem ? should i upgrade my firmware ? mine is v4.13.....plz give an opinion or solution..............

[tzeonn]

it will be shown as e: on fexplorer if it detects it.

go to the memory app in tools, see if it detects any mmc. u might need to upgrade ur firmware so that it can detect bigger mmc like 256, since older phone firmwares might not be able to read some.