ParanoidAndroid custom ROM based on the latest Android 4.2.2 Jelly Bean OS can now be flashed on the Galaxy S2 model number I9100G. Read this entire post and you will manage to flash custom ROM files at your first attempt fast and easy without bricking your device.
It is a great OS and you should flash it for your I9100G smartphone now. ParanoidAndroid has now reached the AOSPA 3+ variant and it brings PIE controls, CyanogenMod options and some other tools / features borrowed from other ROMs. In order to make sure that you will manage to flash this ParanoidAndroid 4.2.2 JB at your first try, then you will have to read the guidelines below:
- Use this guide only with the Samsung Galaxy S2 model number I9100G. This guide or the files comprised withing shouldn't be used with any other Android device.
- Your smartphone has to be rooted and running a custom Recovery image. Without these you won't be able to flash any custom ROMs for your device.
- Create a NANDROID backup of your current OS. You can create such backup using the CWM or TWRP Recovery modes.
- During the installation of this new ROM, you will be asked to factory reset the device. This will delete the /system partition data such as installed apps, SMS, Call logs and other similar data. If you want to backup some of this data then you should use these tools: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore | AppBack for Android application. Root access is required for some of these apps.
- Sync your Gmail account with your Contacts. This will backup all your saved phone numbers and other similar data.
- This guide is for advanced Android users and you shouldn't attempt to use it in case you don't know what you're doing, as that will result in a failed updating attempt.
- Don't skip any steps that I have listed below.
- Also, remember to charge your phone's battery prior to installing this new ROM. It should be over 50% so that it won't power off while you're installing the new files on your smartphone.
- If you have any other questions, post them in the comments section.
These were all the extra instructions that you had to go over before starting the installation of this new ROM.
How to install ParanoidAndroid (AOSPA 3+) 4.2.2 Jelly Bean custom ROM for the Samsung Galaxy S2 I9100G:
- Download the custom ROM from HERE (xda thread link). Save the file on your PC without unzipping the contents of PA custom ROM.
- Download Gapps for Android 4.2.2 ROMs from HERE. Don't unzip the file, save it to your PC.
- Connect your device to your computer. Move both files to the internal SDcard of your device. Disconnect the device from PC when done.
- Power off your smartphone now.
- Boot the SGS2 I9100G into CWM Recovery mode. It can be done if your press Volume Up, Home and Power buttons all at the same time. Release the buttons when the custom Recovery mode appears.
- Select 'backup and restore' option from the main CWM Recovery menu. Confirm that you want to create this backup. Note that this will act as your phone's restore point and in case something goes wrong, the phone doesn't start, then you will be able to boot into CWM Recovery and then restore the ROM backup.
- Select 'wipe data/ factory reset' option now. Confirm this process.
- Select 'install zip frm SDcard' and then 'choose zip from sdcard'. Find the PA I9100G zip file and confirm that you want to install it. Wait several minutes for the install to be complete and then get to the next step.
- Select once again 'choose zip from sdcard'. This time you need to flash the Gapps zip. Confirm.
- Get back to the main CWM Recovery screen and select 'reboot system now'.
- ParanoidAndroid's first boot process starts now and it might take at least 5 minutes to complete. After that it will boot into normal Android mode and you will have to enter your Google Account details in order to gain full access over all your phone.
These were all the steps that you had to take. In case you didn't manage to install the ROM at the first attempt, then you should keep trying the second time as it should install successfully eventually. If you're having no success with it, then you can easily restore the NANDROID backup of your previous ROM.