Since Fyers had already tie-up with almost every National Bank, though users sometimes need to change their primary linked Bank account with a trading account. The process of Change Bank Details needs to submit a physical form. The form is available on Fyers Website >> Bank Account Change Form Link.
One need to fill the form with true data and attaching proof of the desired account cancelled cheque scanned copy, 1 month bank statement, and latest passbook statement.
Request need to submit at [email protected]. It will approximately takes 5 working days for bank details update in backend.