Yes,you can update the default account for redemption of all MF units through Dock.Visit dock and Modify the bank that you want to update as a default bank.
1. Click on Dock.
2.Go to the ‘Profile’ Section.
3.Click on the ‘Bank’ tab
4.Click ‘Add/Edit bank details.
5.Enter Account Number
6.Select ‘Account Type’ - Saving or Current
7.Enter the IFSC code
8.Click on ‘Change Account