Do I need to flash stock recovery before using ruu.zip???

[khanjunaid]

Are the stock recovery for kitkat and lollipop same????

 

[thoctor]

Are the stock recovery for kitkat and lollipop same????

Yes it is. You would need to find and flash back the stock recovery when flashing back to aa stock RUU.

 

[nukaru]

If you didn't install any custom recovery and still have the stock one, you'll just need to relock bootloader and flash RUU. If there's any custom recovery, you'll need to flash the stock one first.