How to Insatll Jelly Bean 4.2.2 in samsung Galaxy Ace

Requirement:-                                                        
1. Charge your devices up to 80%.
2. Download Costume Rom:- Click Here to Download
3. Your Device Must Rooted & Install CWM Recovery.
Installation Process.Click Here
Must Read:- How too Root & Unroot samsung Galaxy Ace GT-5830i

Must read:- How to Insatll CWM Recovery in samsung Galaxy Ace GT-5830i.

1. Download Costume Rom on Samsung Galaxy Ace.
2. Transfer this file to your Mobile in SD Card.
3. Switch Off your device.
4. Switch off your device and open to boot recovery mode.(Press and Hold Volume  UP + Power + 
    Home Button)

5. Then you will move on to ClockWorkMod Recovery screen.
6. Then Go to Back up and Restore.
7. Then Press Backup your Devices. (Just wait 10 to 15 minutes)
8. After complete your back up process the press go back.
10. Then go to wipe data/factory reset.------>Yes, after complete then go back.
11. Then go to wipe cache partition.-------> Yes, after complete then go back.
12. Then go to Advanced---->Wipe Dalvik Cashe--->Yes, after complete then go back.
13. Then go to mounts and storage.-----> Format System----->Yes, after complete then go back.
14. Then go to Install Zip from sdcard.---->Choose zip from sdcard.---->Select Zip file to sdcard.
15. Select Costume Rom .---->Yes to Install this rom in your Device. see this message Install from 
     sdcard complete
16. Just wait 5 to 10 minutes to complete this process. after complete this process the go back--->
     Press reboot system now (Wait for 15 to 20 Minutes because first time booting so don't worry)
Enjoy Your Samsung Galaxy Ace GT-5830i Successfully Install Custom Rom. 
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Note:- I am not responsible if you make any mistake and damage or any other problem your device.