Saya coba googling ketemu artikel ini, apakah cukup reliable?

A custom ROM is a custom version of Android for your device. After you have
rooted your device and flashed a custom recovery on it, you can then use
the recovery to flash a custom ROM. Thanks to a sizeable community of
developers, there are a lot of these third-party ROMs to choose from
(depending on the device) and each one is unique. Developers usually give
you the latest version of Android in their ROM, their own custom themes,
options, and a ton of other customization options and enhancements.

In this procedure, we’ll show you how to flash a custom ROM on your LG G2
(International).

After flashing a custom ROM on LG G2 (International), you’ll be able to:

   - Flash newer versions of Android that the manufacturer hasn’t provided
   yet.
   - Utilize different UI skins or stock Android(HTC’s Sense UI, Samsung’s
   TouchWiz UI, LG Optimus UI).
   - Increase performance
   - Increase battery life
   - More customization options than stock ROMs

Interested? Here’s how to flash a custom ROM on your LG G2 (International):
I. Before You Begin

1. You must be rooted to do this tutorial. Head to our Rooting How To’s
<http://theunlockr.com/how-tos> section, find your device, and do the How
to Root tutorial listed for it there then return to this tutorial to
continue.

2. You must also have a custom recovery flashed on your device before doing
this tutorial. Head to our Rooting How To’s
<http://theunlockr.com/how-tos>section,
find your device, and do the How to Flash a Custom Recovery tutorial listed
for it there then return to this tutorial to continue.
II. Choose a Custom ROM to Flash

1. Head to our ROM repository <http://theunlockr.com/roms/> and choose your
device.

2. Choose a ROM of your liking.

3. Click the download link in the ROM post to be taken to the developer’s
page for that ROM.

4. Search through the developer’s page for the download link for the latest
version of that ROM (usually located in the first post in a forum or under
Downloads).

5. Save the ROM to your desktop of your computer.
III. Flash the Custom ROM on your LG G2 (International)

1. Connect your device to your PC using the USB cable.

2. Copy the Custom ROM .zip file from your Desktop over to the root of your
SD card.

3. Once copied, disconnect your device from your PC.

4. Head over to the Google Play and download and install *Quick Boot*
<https://play.google.com/store/apps/details?id=com.siriusapplications.quickboot>
on
your device.

5. Once installed, launch the app from your App Drawer.

6. Tap on Recovery option in the app it’ll reboot your device into recovery
mode.

In the recovery mode, the Volume buttons are used for navigation and the
Power button to make a selection.

7. Select Backup.

8. Checkmark all the boxes shown on your screen and tap on Swipe to Back
Up. Let it backup your device.

9. Once done, press the Back button.

10. Select Wipe.

11. Select Swipe to Factory Reset and it should wipe off all the data
stored on your device.

12. Once done, press the Back button.

13. Select Install and choose the Custom ROM .zip file you copied earlier
to be flashed on your device.

14. Hit Swipe to Confirm Flash and it should start flashing the ROM on your
device.

15. When the ROM has been flashed, reboot your device by selecting Reboot
followed by System.

16. You’re all done!


2014-06-18 11:31 GMT+07:00 Nathanael Siahaan <[email protected]>:

> Kalau mau gampang tinggal download TWRP image lalu flash pake flashify,
> lalu boot ke recovery flash baseband (ZVC) lalu flash cusrom nya.
>
> Kalau mau susah tapi aman, download dulu file stock KitKat, flash pake kdz
> atau tot method lalu root pakai ioroot dan Install AutoRec untuk flash
> recovery. Nah dari situ tinggal flash ROM G3 nya saja deh
>
> Maaf kalau ribet maklum gak pintar ngomong ✌
>
> --
> Nathanael Siahaan
> 🙈🙉🙊
> On Jun 18, 2014 10:33 AM, "Dion Pratama" <[email protected]> wrote:
>
>> Hi rekan2, mau minta bantuan nih.
>>
>> Saya rencana mau install custom ROM G3 kemarin di G2 garansi Indo saya
>> (D802 yah?), dan karena ini kali pertama saya mau coba install custom ROM
>> sendiri, apakah boleh tolong di share cara2 nya?
>>
>> Kondisi HH saya saat ini adalah sbb:
>>
>>    - OS JB 4.3
>>    - Sudah di root (lupa pakai apa) tapi sama sekali ngga pernah install
>>    custom ROM
>>    - Baru saja di clean factory reset
>>    - Saya coba install KitKat dari update OTA ngga bisa
>>
>>
>> Saya sudah coba baca2 di thread custom ROM G3 yang di xda-developer tapi
>> masih kurang paham.
>>
>> Yang saya sudah lakukan saat ini baru download custom ROM (1.1gb) &
>> baseband nya (20mb something)
>>
>> Mohon sharing nya yah, thanks in advance
>>
>>
>>
>> --
>>
>>
>> Regards
>> Dion Pratama
>>
>>  --
>> ==========
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>> --------------------
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>>
>> Aturan Umum ID-ANDROID >> http://goo.gl/NfzSGB
>>
>> Join Forum ID-ANDROID >> http://forum.android.or.id
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>> Kunjungi grup ini di http://groups.google.com/group/id-android.
>>
>  --
> ==========
> Berubah menjadi lebih terkendali bersama @kartuHalo Halo Fit Hybrid
> Info Lengkap >> tsel.me/halohybrid #KendalikanHidup
> -------------------
> Gunakan layanan Hosting Indonesia yang stabil, terjangkau dan aman
> Kunjungi >> http://www.Qwords.com
> --------------------
> ID-Android on YouTube
> https://www.youtube.com/watch?v=0u81L8Qpy5A
> --------------------
> Kontak Admin, Twitter @agushamonangan
>
> Aturan Umum ID-ANDROID >> http://goo.gl/NfzSGB
>
> Join Forum ID-ANDROID >> http://forum.android.or.id
> ==========
> ---
> Anda menerima pesan ini karena berlangganan grup "[id-android] Indonesian
> Android Community " di Google Grup.
> Untuk berhenti berlangganan dan berhenti menerima email dari grup ini,
> kirim email ke [email protected].
> Kunjungi grup ini di http://groups.google.com/group/id-android.
>



-- 


Regards
Dion Pratama

-- 
==========
Berubah menjadi lebih terkendali bersama @kartuHalo Halo Fit Hybrid
Info Lengkap >> tsel.me/halohybrid   #KendalikanHidup
-------------------
Gunakan layanan Hosting Indonesia yang stabil, terjangkau dan aman
Kunjungi  >> http://www.Qwords.com
--------------------
ID-Android on YouTube
https://www.youtube.com/watch?v=0u81L8Qpy5A 
--------------------
Kontak Admin, Twitter  @agushamonangan

Aturan Umum  ID-ANDROID >> http://goo.gl/NfzSGB

Join Forum   ID-ANDROID >> http://forum.android.or.id
==========
--- 
Anda menerima pesan ini karena Anda berlangganan grup "[id-android] Indonesian 
Android Community " dari Google Grup.
Untuk berhenti berlangganan dan berhenti menerima email dari grup ini, kirim 
email ke [email protected].
Kunjungi grup ini di http://groups.google.com/group/id-android.

Kirim email ke