ROM flashing of your Android

1. Obtain a ROM of your choice, many can be
found in your devices development forum on
XDA Forums or a alternate android development
site.
2. Once you have downloaded the ROM File,
mount your phones SD card and and copy over
the .zip file.
3. Power off the device and then boot up to
recovery, it is different per device. If you are
unsure how to boot up to your Android device's
recovery menu then look it up in the forums or
other tutorials on your device.
4. In your phone's custom recovery bootloader ,
locate the menu options which allow you to wipe
the phone. Whenever changing roms it is a good
idea to make a Nandroid or BART backup first,
then wipe Data/Factory and Dalvik-Cache before
flashing the new rom.
5. Once your phone has been wiped go back up to
the root of the menu and select 'Flash Zip from
SD Card' the text may be different per Recovery.
6. Locate the ROM .Zip file you wish to flash.
7. Confirm the flash by following the on-screen
instructions (ie: pressing the trackball, pressing
the call button, etc.)
8. If no errors arise during the flashing process
then the ROM flash was successful, Reboot the
device.