Visit the official UIDAI website or your nearest Aadhaar Enrolment/Update Centre
Fill out the Aadhaar Update/Correction form
Select Date of Birth as the field to update
Provide valid proof of date of birth such as birth certificate, passport, PAN card, or school leaving certificate
Submit the form along with the supporting document
Complete biometric verification if required
Pay the applicable update fee, if any
Collect the acknowledgement slip with the Update Request Number
Track the status of your update request on the UIDAI website
Download the updated Aadhaar after the request is approved