Brother QL-810W Ultra-Fast Label Printer with Wireless Networking - Manual (Page 164)

How to Update P-touch Software
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c Click the [ Machine update ] icon.
d
Select the [ Printer ], make sure that [ The machine is connected correctly. ] message appears, and
then click [ OK ].
e Select the [ Language ], select the check box next to the firmware you want to update to, and then click
[ Transfer ].
Important
Do not turn off the Label Printer or disconnect the cable during data transfer.
f Check the content you want to update, and then click [ Start ] to begin the update.
The firmware update begins.
Note
Do not turn off the Label Printer during the update process.