Step 1 - Download Jelly Blast ROM for Galaxy Y to your phone.
Step 2 - Place the rom zip file in your sd card. Do not place it in any folders!
Step 3 - Then, turn off your phone.
Step 4 - After your phone is switched off, hold the Volume Up, Home and Power button altogether .
Step 5 - Use the volume keys to move up and down.
Step 6 - Select apply update from sd card, then press Skin-1980 CWM.zip
Step 7 - In CWM recovery, wipe data and cache.
Step 8 - Select install zip from sd card
Step 9 - Choose JellyBlastGenED.signed.zip
Step 10 - Choose "Yes" (It will be installed) Step 11- After the rom has been installed, reboot your phone! Step 12- After your phone has rebooted, you have sucessfully updated your galaxy y to Android 4.1 Jelly Bean.
That’s it! Your Galaxy Y should now have Jelly Bean Blast Android 4.1 ROM installed on your phone! Go to Settings > About phone to verify.
[Note: The Android version is displayed as 4.0.4 to complete the look and feel of the ROM. Users should keep in mind that it is actually 2.3.6]
We will not be responsible for any damage of your phone, flash this at your own responsibility. No one will be liable for any damages.