One management tool for all smartphones to transfer files between PC & iOS/Android devices.
It really troubles you when Syncios has no rights to write your external SD card so the backup & restore of which become difficult. Now please follow this simple tutorial to authorize Syncios app to write your external SD card on devices with Android 5.0 Lollipop and above version.
Step 1 Launch Syncios app on your Android device.
Step 2 Click Menu button in the right cornor. Go to "Preferences".
Step 3 Click "SD Card Permission", choose "Settings" in the bottom.
Step 4 Choose "Display advanced devices" under Settings.
Step 5 Back to "Open from" interface, then choose "SD Card".
Step 6 Click "SELECT ALL".
Now you have successfully authorized Syncios app to write your Android smartphone SD Card.
3. Device still can't be detected successfully after trying the solutions listed above? Please contact us at firstname.lastname@example.org for help.