If you’re unhappy with the stock OS , you can install one of many custom ROM on your rooted Galaxy S3 (Link: Tutorial How To Root Galaxy S3). Besides, even if you don’t, you can always restore from your backup. We have test and share a lot of Galaxy S3 popular ROMs with you, so which one is right for your needs?
Here we found another new and unique ROM for Galaxy S3, called CheckROM RevoHD. This ROM, CheckROM RevoHD V4.0 is stable and was design base on the Android 4.0.4 version I9300XXLG8. Compare to other ROMs, this ROM installed with KitchenPro Application. KitchenPro is powerfull application that allow you to customize your own ROM style! You can choose kernels, Themes, Widgets/Apps, Morphing, Utilities,and Mods. You can change to your own style ROM by simple launch KitchenPro applications then choose the features function and install. Sure, you need to flash CheckROM RevoHD into your Galaxy S3 to use this KitchenPro application. Here is tutorial on how to flash CheckROM RevoHD V4.0 into Galaxy S3, GT i9300:
Note: Normally, we need to do full wipe (wipe data/factory reset, wipe cache partition,advanced> wipe Dalvik Cache) at CWM Recovery (What is this- full wipe ?)before install new custom ROM into Galaxy S3. This is prevent Galaxy S3 stuck at boot screen or lot of message prompt (slowing down performance) after completely flash new ROM.
But, here, I try to flash CheckROM RevoHD V4.0 ROM into Galaxy S3 without Do full wipe (wipe data/factory reset, wipe cache partition,advanced> wipe Dalvik Cache). As results, I found it also work fine and stable. All the data and installed application in my Galaxy 3 still remain after complete flash CheckROM RevoHD V4.0.
Step 1: Download CheckROM_EvoHD_V4.zip For Galaxy S3. Then put into Galaxy S3 SD Card storage. ( Note- if you are using Touch ClockworkMod V6.0, then you need put into Internal Storage and not is External SD Card Storage)
Download RGUI_GT-I9300_V9.zip and V9 smoothness fix.zip: Developer Link (Note: choose the ROM Version that match your Galaxy S3 Model)
Step 3:Power Off your Galaxy S3.
Step 4: Press Galaxy S3 Volume Up Button + Power Button +Home Button until boot into CWM Recovery Mode. (What is CWM Recovery Mode?)
Step 5: Touch to Select “install zip from sdcard”, then select “choose zip from sdcard”
Step 6: Select CheckROM_EvoHD_V4.zip sdcard and select choose zip from sdcard. Select “ Yes –CheckROM_EvoHD_V4.zip ”. The installation process is start now.
Step 8:CheckROM_EvoHD_V4.zip now completely flash into your Galaxy s3 . Reboot your galaxy S3 once the installation Complete. That’s All!
If your Galaxy S3 phone has some problem after flash new custom ROM. then you can refer tutorial here on how to solve this issues.