Follow steps one by one to update your Aadhaar Card for through online portals without any cost
Search in Google myaadhaar.uidai.gov.in.
From homepage >>> login page.
Enter login details = Aadhaar number or Enrolment ID.
Click on the Update.
Now click on any option that you want to update like name, phone number, gender, date of birth, etc.
After choosing any of these options, you will be asked to upload a scanned document for the same.
Upload the document and click on the submit option.
A Service Request Number (SRN) would show up on a new page.
Write down the number carefully for further reference.
Once your process is Complete, you will be messaged via registered email or phone number.