Sony XR-55A75L Service Manual page 144

SOFTWARE UPDATE & RESET
Factory Data Reset – with UI method
1. At Home Menu, go to Settings
2. Select System / Device Preferences
7. Select 'Yes'
3. In System, select 'About'.
[</>] Set [Home]Exit
6. Select 'Delete everything'
4. In About, Select 'Reset'
5. In Reset, Select 'Factory data reset'
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SYS SET