Dear Modip,
You can update your KYC details, including Aadhaar number, by yourself after logging in under the employee portal of the EPF website. All you need to do is create a login ID (i.e., your UAN number will be your user ID) and password. When registering with the EPF website, provide a correct mobile number to receive an OTP for UAN employee login activation. After logging in, you can also submit your claim online. Keep your previous employer updated to approve settlement within 15 days from the date of lodging your withdrawal or transfer claim.
Hope this information helps you!
S. Bhattacharya