Android 5.1 Lollipop on AT&T Galaxy S4 with GamerROM
GamerROM is therefore based on pure
Android 5.1 Lollipop OS which means that the firmware isn’t pre installed with
carrier apps, or restrictions and also TouchWiz UI isn’t featured on the
Lollipop platform. Therefore, on your AT&T Galaxy S4 you will now be able
to experience a smooth Android 5.1 OS that can be easily customizable.
Moreover, thanks to the features that can’t be usually found on the default Android
system, now you will be able to improve the performances of your device for
gaining more power, upgrade the speeds and improve the battery life.
If you are, then you should know that
you can safely apply the steps from below only if you first prepare some
things. You see, a custom ROM is an unofficial Android update, which means you
are about to complete an unofficial procedure. Because of that, the warranty of
your Galaxy S4 will be lost once you start to flash the Android 5.1 OS.
Moreover, you also have to tweak your handset before being able to install the
GamerROM; here is what you need to do:
Ensure root access on your AT&T
Galaxy S4 because an unofficial Android system can be installed only if the
current Android OS is unlocked – the custom ROM will modify and change in built
settings, programs and features.
Install a custom recovery image on
your phone – a custom ROM, like the GamerROM, is offered in form of a .zip
file. Well, an unofficial .zip update can be safely flashed only through a
custom recovery platform (such as CWM or TWRP recovery), so don’t go any
further without completing these tasks.
Be careful as this is a complex
process and you can brick your phone if you mess things up – if something bad
happens, don’t hesitate and check how to fix most common Android related
issues.
Backup your AT&T Galaxy S4 before
starting to install Android 5.1 Lollipop OS. Make sure you save everything
that’s important including texts, call logs, contacts, EFS folder, market apps
and other personal data, info and accounts – you can use backup and restore
tools from Google Play in that matter.
Make a Nandroid backup and save the
current ROM that runs on your S4 as who knows when you will need to make a
downgrade to stock operation – for example, if the GamerROM isn’t performing as
you expected.
Good; now you know how to prepare your
AT&T Galaxy S4 before updating your phone to custom Android 5.1 Lollipop
OS. But, the preparation tasks aren’t over yet; you still have to make sure
that you can use a computer, your phone and its USB cable as this is a manual
update operation. Thus, on your device you should enable USB debugging option
(first gain developer rights and then check the mentioned option from “menu –
settings – developer options”) and you should also charge your smartphone if
the battery power left is currently lower than 50% – you can brick your SGS4 if
your phone gets turned off in the middle of the flashing process from below.
How to Install Android 5.1 Lollipop on
AT&T Galaxy S4 with GamerROM
First, from this page download the
update firmware file on your computer.
Don’t unzip the file, just place it on
desktop.
Then, transfer the update package on
your smartphone – connect your SGS4 with your computer via USB cable.
When done, remove the USB cable and
also turn off your phone as you need to enter recovery mode on your handset.
Once in recovery, use the main menu
and select the following options: “wipe data factory reset”, “wipe cache
partition” and “wipe dalvik cache”.
After doing so, from main menu of
recovery select “install zip from SD card” and “choose zip from SD card”.
Pick the Android 5.1 Lollipop firmware
package and install the GamerROM system on your AT&T Galaxy S4.
Wait while the update is being
flashed; in the end go back to main menu of recovery and select “reboot system
now”.
That’s it; go ahead and test the
GamerROM firmware on your smartphone and see how the Android 5.1 Lollipop OS
runs.
