Here are the steps to reset your ATM PIN:

• Go to the Credit Card page in the Fi app
• Tap on the settings icon located on the top of the page or click on the ""Card Controls"" option located at the bottom of the page
• Select ""Reset ATM PIN option"" and follow the on-screen instructions to reset your PIN.
• Here are the detailed instructions:
• Enter the OTP received on your registered mobile number
• Enter a new PIN of your choice
• Re-enter the new PIN to confirm.