The specific steps of unfreezing 500 yuan ETC deposit through this communication tool are as follows:

1. You need to log in to CCB ETC official website to check whether there are any frozen funds in 500 yuan in the account information.

2. Click the "Service Center" button to enter the "Account Center", click the "Fund Management" button at the top of the account center page and select "Unfreeze".

3. On the unfreeze page, select the amount to unfreeze, fill in the unfreeze reason, and submit the unfreeze application.

4. Please note that the unfreezing application may need to be reviewed. Once approved, the frozen funds will be unfrozen.