Android (Yuphoria) stuck in bootloop without recovery and ROM & files cannot be written
Flashing a stock firmware should fix this.


Download and extract Yu Yuphoria YU5010 stock firmware on your computer
After extracting, you should get the Firmware File, Flash Tool  and How-to Flash Guide.
Install the USB Driver on your Computer
Follow the How-to Flash Guide to Flash the Firmware .


Follow the steps carefully and your problem should be fixed.