What are the custom roms available in market for android and ios for micromax funbook P 300? I am working to add custom rom that are available for ios and android,I need to add add custom rom in my android phones, I was using "androios" rom that is featured for both  ios and android, but its not rebooting properly in 


  micromax funbook p300


Can any one please help me, Regarding Custom Roms that have features of both ios and android, to add in micromax funbook p300.
Firstly you can't install iOS on your Funbook. Any ROM(s) that claim in doing so are actually just running Android with a launcher that looks like iOS.

For information about ROMs for the P300 I suggest you read this thread. The number of working ROMs as is seems pretty scarce.

Also, when you root, unlock your bootloader or flash a custom ROM you void any warranty of your device.