I had installed ddwrt on my D-Link router
. I somehow did not find it better than stock. To go back I was struggling for 2 days. Finally, Windows
XP virtual machine with old Mozilla web browser was the only thing that the dlink router accepted that too in emergency room interface to upload the stock firmware. With all other OS and browsers I was simply getting an error and was stuck for 2 days. I am not discouraging you @nishantt6969
from installing third-party stuff, just know all challenges of it beforehand. Do good amount of research, study it properly and then go ahead.