In the following article we are going to show you the correct way to update the Samsung Galaxy S2, model GT-I9100 a Android 4.3.
We will achieve this by flashing a cooked rom, specifically the latest work from the developers of ParanoidAndroid 3.99 and based entirely on C.
In other tutorials published in Androidsis We explain how to update the Samsung Galaxy S, the Galaxy S3 and the Samsung Galaxy S4, and how could it be otherwise, now it is the turn of this other sensational Samsung terminal.

Requirements to meet
- Having a Samsung Galaxy S2 model GT-I9100
- Root and modified Recovery
- EFS folder backup
- Nandroid Backup from your system, we do this from the recovery.
- Fully charged battery
- USB debugging enabled from the system settings.
Required files
For the correct installation of this rom, we will need to download two compressed files in ZIP format, one with the Gapps or native Google applications and another with the ParanoidAndroid 3.99 rom itself that will update our Samsung Galaxy S2 a Android 4.3.
Once all the requirements have been met and the two compressed files have been copied to the root of the internal memory from our terminal, we will be ready to restart in recovery-mode and proceed with the flash method of the rom.

Rom flashing method
- Mounts and storage
- Format system
- Format data
- format cache
- format preload
- Go back
- Wipe data factory reset
- Wipe cache partition
- Install zip from sdcard
- choose zip
- We select the zip of the rom and confirm its installation
- Install zip from sdcard
- choose zip
- We select the zip of the Gapps and confirm its flashing.
- Wipe cache partition
- Advanced / wipe dalvik cache
- Go back
- Reboot system now
With this we will have correctly installed the rom of ParanoidAndroid 3.99 in our Samsung Galaxy S2 with the consequent unofficial update to Android 4.3.
More information - Samsung announces official update to Android 4.3 for the Galaxy S3 and Galaxy S4
Source - HTCmania
Download – ParanoidAndroid Rom 3.99, Gapps Android 4.3