Wireless Firmware missing problem for dell inspiron 1564 model

I am new in ubuntu and I face a problem for connecting wireless in my Laptop ( Model: dell inspiron -1564 )[i]

It was shown a massage on the wirless network connection icon "Firmware Missing"........I was worried but at last it was solved with the help of Amit vaia..........


For solving this problem you have to open terminal window of your computer.Then write the following simple code:
The code is very simple:

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Code:

sudo apt-get install Flashrom

writing this code on the terminal and follow the commands.............
After installing this, You must have to restart your PC
I hope then your internet wirless will be connected.

Actually, it is

Code:

sudo apt-get install bcmwl-kernel-source

Good work nevertheless