Memor 10 Android 10 firmware 3.00.03 version embed a flawed Google ManagedProvision app not setting the flag needed to whitelist device policy controller (DPC) applications such as an MDM agent.
The results is that it will not be possible to apply a firmware update or a configuration file, or any other configuration that will require to download a file first (APK installs is excluded) through MDM.
A specific patch to fix this issue is available for all customers using MDM to deploy/configure Memor 10 Android 10 (whitelistingpatcher-v1_0_0-release.apk) with previous mentioned firmware version.
Refer to whitelistingpatcher_M10A10 for downloading the patch and related technical note.
Please note that all firmware versions for both Memor 10 Android 8.1 and Memor 10 Android 9 do NOT suffer of this problem and that starting from next version 3.01 the Memor 10 Android 10 firmware will embed updated ManagedProvision app version so that it will not be necessary to apply this patch anymore.