Point Mobile PM550 - Understanding and Performing Factory Reset; Understanding Data Erasure; Starting the Factory Reset Process; Confirming Data Erasure

PM550 Android 7.1.2 User Manual
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Factory data res et
Factory data res et from Settings
Factory data reset from Settings
Factory data reset
When your PM550 system is unstable and abnormal
behavior occur but could not recover by rebooting, you may
need to “Factory data reset” your PM550
Touch “App Drawer” → “Settings” and then
“Backup & reset”
Touch “Factory data reset”