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How to flash a custom ROM on a rooted Android device

#1
(This post was last modified: 11-20-2013, 02:51 PM by hovatek. )

Ready to flash some custom ROMs on your Android
device? Here’s a little generic walkthrough to give
you a better understand of the concept, it’s
prerequisites, and get you from beginning to end
without any headaches.
I. Be familiar with the meanings of rooting and upgrading Android os
II. Root Your Device
First and foremost, you need root access. Root
access is essentially getting the phone to give us
permissions to change what we want.
1. If you don’t have root access or never rooted
your phone, then root it. Once, done, head back here to continue.
III. Flash a Custom Recovery Image (skip if when
you rooted you flashed a custom recovery already)
Next thing needed after rooting is a custom
recovery image. All Android devices have a
recovery partition. This is essentially a section of
the device’s memory devoted to a very basic
recovery system that is separate from the normal
operating system. This is normally used by
manufacturers for recovering a broken device (as
even if the operating system crashes, the recovery
image has a chance of still being access and used
to reflash the operating system, etc.).
Because of that function of flashing the operating
system, once we have root access, we can use it
to flash our own versions of the operating system.
Before it’ll do that though, we need to replace the
original recovery image with a custom one that has
a lot more functionality.
1. After you have root access, head to the market
on your device and look for ROM Manager.
Download and install the free version.
2. Open ROM Manager and select Flash
ClockworkMod Recovery and choose your device.
3. Select Grant when the Superuser prompt comes
up.
4. Wait for it to say successfully flashed. You now
have a custom recovery image.
IV. Load a Custom ROM
Now that we have root access and a custom
recovery image, we need to find a ROM we want to
flash. Thanks to the amazing third party developers
(most of which do this in their spare time), there are
a bunch of ROMs to choose from. All of them have
their own pros and cons and tweaks and themes,
so you should try a few to decide which you’d
prefer.
1. Head to a ROM Repository and find your
Android device to be presented with all of the custom ROMs found for your device. Then follow the
download links to see their features and download
the .zip file for the ROM to your computer.
2. After you download the .zip to your computer,
plug in your device via USB cable.
3. Copy the .zip file to the SD Card (do NOT extract
it, just copy the whole zip file).
4. Unplug your device.
5. Now, open ROM Manager again.
6. Select Reboot into Recovery and wait for the
device to reboot.
7. Once in recovery mode, use the volume buttons
to navigate and power button to select Backup and
Recovery.
8. Then select Backup and hit yes to confirm. Wait
for it to finish backing up your current system (this
will save you if something goes wrong).
9. Select Wipe Data / Factory Reset.
10. Select Flash zip from sdcard.
11. Select Choose zip from sdcard.
12. Find the ROM we copied to the sdcard in .zip
format and select it. Then select yes to confirm.
Wait for it to finish flashing.
13. Select Reboot System Now. Once it reboots
(which will take a while the first time), you’ll be
running the new ROM.
To flash a different ROM, just redo all the steps in
Section IV here. Enjoy and don’t forget to comment
on the ROMs you try in the repository so others can
see what they’re all about.


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#2
Hello sir... What do you mean by ROM repository?
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