Good morning PramodV,
Thank you sharing your wireless concern with us. It will be my pleasure to customize a solution to the wifi issue. May I ask have you been able to successfully connect to your wifi network since you have completed the update? Also, what network security setting is your wifi network set to? If all other variables are working properly then I would suggest attempting to connect to another wifi network to ensure that this technology is functioning properly. If not then please advise of your findings. If you are able to connect to a public wifi then the next step would be to verify the security settings on your home network. The suggest security option is WPA2. If you need help finding this info then please reply with your wifi network provider's name and the type of modem that you have. I'm looking forward to your response.
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