Aadhaar Card Update: The last date to update Aadhaar details for free will end on September 14. Earlier, the Unique Identification Authority of India (UIDAI) had extended the deadline multiple times, and it remains to be seen if it ewill extend the deadline again. The current deadline of September 14 was extended by three months on June 14 by the UIDAI. Earlier, the UIDAI extended the deadlines on March 14 this year and December 15 last year to update Aadhaar details for free.