大大不好意思，我看錯了，應該不是1620的機心，以下是DE325改區碼的方法，大大可以試試看!

First is to power up your recorder and press "INPUT" to switch the display to "Cam1" and press "OK", Next press "3 2 5 0" and press "OK", finally you would see the display to "000" and your player is now a multi-region player.. Think by pressing the 325 is the model number, pressing 0 is multi-region, pressing 1 is code 1, 3 is code 3 and so on....