What is firmware?how its work with devices?

What is Firmware?

Firmware is software for control and maintains the hardware. And it can not change and modify by an end-user. It gives instructions on how to communicate your device with other device’s hardware. Usually, the firmware is known as ROM(Read Only Memory) you can change by rewrite and erase then write new ROM this process called flash memory.

It can be considered as “semi-permanent” because it remains until it is updated by firmware updater. You may need to update some devices, such as hard drives and video cards to work with new operating systems. CDs and DVD drive manufacturers often provide firmware updates that allow the drive to read media faster. Sometimes manufacturers release updates that work more efficiently just by their devices


The Function Of Firmware

Firmware mainly design for high level software and it update without change the hardware. it stored principal instrucation of harware devices. Hardware device fully unseless without a firmware

Updates

Manufacture campanies gives updates regularily for batter compatibility hardware and add some extra features.

An example can be seen when downloading it for Wireless router like LinkCR WRT54G. To find the download section, just go to the website of the router on the linkages website (here it is for the router), where you get the firmware.

How To Apply updates?

It’s impossible to explain how to apply updates because all device Have a different method to install it. Some updates applied Wirelessly, and some device updates applied by copying it in portable drive then load into your device.

However, in some devices, such as the most router, there is a dedicated section in the Administrative Console that allows you to apply updates. This is usually a section that has an open or browse button that lets you select the downloaded firmware. It is important to review the device’s user manual before updating , just to make sure the steps you are taking are correct and you have read all the warnings.

Some things you should remember during updating

Just as any manufacturer will show the warning, it is very important to ensure that the device receiving the update does not stop if the update does not apply. A partial update leaves the firmware corrupt, which can severely damage the way the device works.

This is equally important to avoid applying incorrect updates on the device. Give a device a piece of software that is related to a different device. resulting in that hardware should not work as if it should. It is usually easy to tell whether you have downloaded the correct firmware only by double-checking that the model number corresponding to that firmware matches the model number of the hardware that you are updating