can't fix this help!

i have a flasher(nk-box) that works with several phones sucessfully but a 3210 phone failed!,,,, huh! i've check the connections on the flasher and located the pins for mbus,ground,fbus(rx,tx) and vpp and also opened my ps/2 phone connector to check the connections! its alright then but when i flash the phone it extremely says! buffer to low... even mcu...

i'm using flasher 4.78 by rolis,nokia flash tool, etc...

but still d problem s der!

is it possible that my flasher is defective? but i can flash other phones...

please help me... i've been having this probs for almost month....