For you to be able to reset the the unit, you need to install or replace the MSAMs where all previous information is stored. Here are additional steps that you may apply to reset the unit.
1 Remove the power cord and/or battery (see Smart Battery) from the terminal.
2 Place the terminal upside down on a soft, clean surface to protect the lens
3 Remove the MSAM compartment door screw and rotate the door up and back
to access the MSAM cardholders (see Figure 11).
4 Remove any previously installed MSAM card by sliding the card from the
5 Install an MSAM card by aligning the card and carefully sliding it within the
guides on the cover until it is fully inserted (see Figure 12).
Please visit this link
to download the Installation guide.Verifone Vx570 User Manual
Hope it helps.
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