FLASHING AND UNLOCKING

Flashing is installing a new firmware to  a cellphone flash memory. When the cellphones firmware is being damaged or interrupted, this one particularly result on not powering the phone, hang up, or keep on re-starting and a lot more software problem issues.
This firmwares were comes with different versions.
 Each mobile phones product has unique firmware versions. And have also specific software that to be use for it.
If you have a basic computer knowledge is more advantage, but even if none you can still do and learn easily.
What things do we need in flashing cellphones?
In flashing phones we need ob-course
1.)A desktop or laptop computer to run the software program, with a USB (universal serial bus) port.
2.) Flashing Device- It is programmed circuit that can synchronize the mobile phone and the computer.
3. Flashing Software - this software is provided by the flashing device seller or even you can download it on the internet.
4. A USB cable and a flashing Cable wire- this the wire that used to connect the mobile phones to the flashing device that also connect to the computer.
This one is also provided by the flashing devices seller or you can purchased a pre designed one.
Every mobile phone products have different kinds of flashing devices used,  and also have different methods and procedures.
5. Flashfiles and Firmware collection- this are the programmed data used in the phones. See here of exmples of flashfiles in Nokia Mobile Phones.
Below are the list of Flashing devices which is being used to flash a certain and particular mobile phone products.

Advance-Box
Axe Box
Cruiser Team Products
CPF-box Products
Cyclonebox
Easy-Unlocker
ET-BoX
FuriouS TeaM Products
Genie Universal
GM-Box
GsmMagicBox G
SMServer Products
Infinity-Box
J.A.F - Just Another Flasher
Kulankendi Box / Dongle
Martech products
Mastertools
McnPro Box
Micro-Box.com Team Products
Multi-Box TEAM Products
MXKEY (by Alim Hape)
NEROkey
NSPRO
POLAR Team Products
Rocker Team products
T-BOX Products
SAGEM JTAG UNLOCKER
Saras Boxes
SMTi Support Sections
SpiderMan
SPT BOX
Super Doctor Box (MTK-BOX)
TEST-BOX 2
TGT Products
Ultimate-Sam
Universalbox
UST Pro II
Ve Box
Vodafone Star
VygisToolbox
Z3X-Team Products

UNLOCKING

There are many mobile phones are "locked" into one particular service provider once purchased it. A user cannot use the handset to switch into another service provider by replacing available SIM card module into it.
So the best reason is to unlock the phone so it will be used into another network which is very useful when traveling from country to country.
Unlocking is completely legal and not illegal, because every phone user own the phone after all! 
the only reasons that the networks do it is to try to make sure that the phone users don't move to another network, but all it really does is stop them using the phone as they would like to!

But how to Unlock a Phone?
 There are two methods in unlocking mobile phones, It varies a certain products of mobile phones some can be easily unlock and some are not.
1. Unlocking by entering an unlock code. Many Nokia, Samsung, Siemens, Sony, Panasonic and some other brands of mobile phone will unlock if you enter a specific code based on your phone's IMEI (serial) number. This is the most easy method of unlocking - all you have to do is get hold of the code!
There are some that offers free unlock codes and some you need to purchased it via online.

2. If a model of phone does not support unlocking by code, you need to get the phone unlocked using a unlocking device and a unlocking software tool.