How to update/change signature in trading and demat account ?

How to update/change signature in trading and demat account ?

To update/change signature in your trading and demat account, you need to submit a filled and signed hard copy of the Change Of Signature form (Provide the link) along with a self-attested copy of PAN and Bank signature verification letter to below-mentioned address.

Address: 
To Modification Team.
IIFL Securities Limited, IIFL House, Sun Info-tech Park, Road number 16V,
Plot No. B-23, Thane Industrial Area, Wagle Estate.
Thane-400604