[Q] Getting back to stock recovery topic

Hi ! I just unlocked bootloader of my phone (Micromax Canvas A1 with Android One) yesterday, flashed a Custom CWM Recovery and Rooted it. But now, I want to get back back my warranty by unrooting it. I think the following steps will work in getting back my warranty:

1) Unroot Android
2) Flash stock recovery
3) Relock bootloader

I can unroot and relock the bootloader on myself. But I don't have stock recovery image for my phone. Can anyone here provide me the Stock Recovery image file for this phone?
Moreover, I have one more Canvas A1 handset which is completely in factory mood (and so under warranty unlike my rooted Android one phone :P ). Is there any way to create a flashable rocovery image file from this phone?

Anyways, I will be very happy if only anyone could provide me the Stock Recovery Image file for this phone .
Thanks in advance !