Thanks, @zoogara I was able to force the update as you suggested, This remote was connected to a router (Sonoff plug) which was causing the issue I believe, I reconfigured remotes to directly connect to the co-ordinator which resolved the OTA issue. It took almost 4 hours to install the update.
I see the remotes with 2.3.014 firmware is having the battery drain.
I had updated two remotes to 2.3.080 and testing them out, I will keep you all posted,