Hard Reset not working - CRS309

During the phase of configuring bridge and vlan i lost the connection with CRS309 Router. A month back i was able to reset the router very easily, however now reset doesn’t work anymore. Serial console never worked for me . So pretty much i’m locked. Any other option to reset the router ? Or can someone please summarize the reset steps that you have tried .
Note: i’m using winbox to discover the router

Cheers,
Sree