In the ERP system, the specific steps to modify the name of the supplier's bank account in the financial system are as follows.

1. Log in to the ERP system and enter the financial management module.

2. Find the relevant functional modules, such as supplier management or bank account management, and click Enter.

3. Find the supplier or bank account to modify in the supplier list or bank account list, and click Modify.

4. Find the supplier or bank account to modify in the supplier list or bank account list, and click Modify.

5. After confirming the modification, click the Save button and the bank account name will be automatically saved and updated.