How can i upgrade my android

Solution
Kikat is supposed to run well on phones with 512 MB or greater RAM.
JB could work on low RAM memory devices. It is possible to upgrade but only under custom ROMS. Installing them voids your warranty of phone and there is a risk of getting soft/hard brick. Brick actually means your phone is now piece of brick and cant be used. Soft brick can be solved but hard maybe not.
You can search on google "custom rom for <your phone name>

Though XDA is a good forum for this purpose:
http://forum.xda-developers.com/galaxy-y


One 4.0.4 ROM but in beta stat so it should have bugs:
http://forum.xda-developers.com/showthread.php?t=2677037

All on your risk.


I want to install kitkat on any of the above one.. cant i do it?
 
Kikat is supposed to run well on phones with 512 MB or greater RAM.
JB could work on low RAM memory devices. It is possible to upgrade but only under custom ROMS. Installing them voids your warranty of phone and there is a risk of getting soft/hard brick. Brick actually means your phone is now piece of brick and cant be used. Soft brick can be solved but hard maybe not.
You can search on google "custom rom for <your phone name>

Though XDA is a good forum for this purpose:
http://forum.xda-developers.com/galaxy-y


One 4.0.4 ROM but in beta stat so it should have bugs:
http://forum.xda-developers.com/showthread.php?t=2677037

All on your risk.
 
Solution