AVT MAGIC PhonerSet Grandstream GXV3350 Provisioning Manual page 19

Install PhonerSet App (2)
Allow the installation of an app from a USB
▪
Flash Drive in the settings.
To do this, open SETTINGS on the home
▪
screen of the telephone, scroll down to the
BASIC category and tap SECURITY
SETTINGS.
▪ Enable UNKNOWN SOURCES and confirm
the subsequent safety warning with OK.
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