Since the Factory Reset Protection is a security feature designed to prevent unauthorized access after a factory reset, the most legitimate methods to bypass it usually require the original account credentials. However, if you're dealing with donated devices and cannot get the original account details, you have a few options and considerations:
* Make sure the tablet is indeed locked by FRP. FRP will usually prompt you to enter the Google account credentials previously used on the device.
* Several tools are available that claim to bypass FRP.
* Perform a Hard Reset
If you've tried standard FRP bypass methods and they haven't worked, using specialized FRP bypass tools or seeking manufacturer support are your next best options. For donated devices, verifying the tablet’s FRP status, checking with the manufacturer, or consulting professional services might be necessary steps.