Introduction
Tools
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Use the metal spudger to pry the end cap with the buttons.
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Pry from all sides to loosen the adhesive.
 
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Flip the device so that the Sonos logo is on the top.
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Use the Torx T6 screwdriver to remove the two 6 mm screws.
 
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Flip the device so the Sonos logo is on the top.
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Use the iFixit opening picks to wedge between the split of the grille and the back of the speaker to pry the grille apart.
 
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                            Conclusion
                          
                          To reassemble your device, follow these instructions in reverse order.
What about IP67 rating? Am I going to lose the water resistance rating if I do not reapply some glue or additional adhesive when reassembling things back?
Askar -