If you getting error of Your System is Up to Date then follow below steps to Update your Karbonn Sparkle V running on LMY48M firmware with stock recovery.Note that your device must be unrooted and running on Stock Recovery.Here in this Steps by step tutorial of how to install the Android 6 OTA update on Karbonn Sparkle V manually.
#Update Micromax Canvas A1 to Android 6.0 Marshmallow.
2.Now copy this OTA file into your Root of SD Card.
3.Then restart your device into
Recovery mode.You can do it by Switching OFF your device and then
pressing Volume down Key and power key for few sec Unitll you see the
5.Now Wait till the file is flashed (It takes about 5 – 7 minutes to complete the process).
6.After it’s done select “Reboot to a system now”.
Now your Canvas A1 will reboot and first boot take Some time.After boot completes You have Android 6.0 Marshmallow on your Karbonn Sparkle V.Enjoy!