When i insert my 4 gb micro sd card into my celfone and i set to external memory, it flashes insert memory card. Just after it was inserted into a wrong slot in other celfone.

There are external memory card readers, you can connect to any USB port of all modern computers. Perhaps even your flash drive has an USB connector, so you can put it in an USB slot from the computer.
If the flash five is a mini or micro SD card, you need an adopter from Mini (Micro) to SD ann that combination should be inserted in the external memory card reader.

A micro SD card is the correct memory card for the 14xx series. A 2 GB should be just fine. Some units can not handle a large memory SD card. This has nothing to do with the physical size however.

Are you sure it isn't a micro SD card that is inserted into a standard SD card adapter? A standard SD card is much larger and will not fit into the 14xx series. Look at the end of the SD card that does not have the gold pins and see if there is a ridge where the micro SD card may be inserted into the larger standard SD adapter. Using a fingernail, you can slide the micro SD card out from the SD card adapter. Also, the micro SD card will only insert one way. Try flipping it over and inserting it again, always with the gold pins facing the Nuvi.

you please insert the card with the help of card reader and try

Your 8GB card is considered "high capacity". You will need an SDHC USB card reader to read it.

it will need to be smaller then 8gb...... also micro SD......... NOT micro SDHD .....you also need to format it using the phone (check user guide for info on how to do this)
hope this works for you .....good luck

use some other card reader for the purpose and format it from there.

You may have to get a card reader that takes stuff off and puts stuff on the sd card that connects to the computer using a usb port because most computers do not have an area where you can insert the micro sd card.

omg... put your memory card with the bigger card witch you get when buying a memory card into the computer. i do everything with usb but if you cant then do it this way

try inserting it on the other usb panel.

I read somewhere that a 4 GB Micro SD card is the largest you can put in the SanDisk Sansa E260 expansion slot. It's maximum capacity is 8 GB, with internal + external memory put together. This is from what I've read. Hope this helps.